diff --git a/lib/builder-targets.sh b/lib/builder-targets.sh
index 65f7e5d..aa0e4ad 100644
--- a/lib/builder-targets.sh
+++ b/lib/builder-targets.sh
@@ -82,20 +82,22 @@ builder_retrieve() {
 	local urls=${SOURCE[$i]}
 	local arch=${ARCH[$i]}
 	local downloaded=0
-	
-        # Add private repos to the urls
+
+	# Add private repos to the urls
 	if [ ! -z ${DIST_PRIVATE_REPOS} ]; then
 	    urls="${DIST_PRIVATE_REPOS}/$basename;$urls"
 	fi
-	
-        # check existence of CRC file
-	if [ ! -e ${PRODUCT_DIR}/${basename}.sha1sum ] ; then
-	    echo "You need to create the checksums with: sha1sum ${DIST_CACHE_DIR}/${basename}  > ${PRODUCT_DIR}/${basename}.sha1sum"
-	    exit 1
+
+	# check existence of CRC file only in non devel mode
+	if [ ! -z "${DEVEL}" ] ; then
+	    if [ ! -e ${PRODUCT_DIR}/${basename}.sha1sum ] ; then
+		echo "You need to create the checksums with: sha1sum ${DIST_CACHE_DIR}/${basename}  > ${PRODUCT_DIR}/${basename}.sha1sum"
+		exit 1
+	    fi
 	fi
-	
+
 	echo "Downloading $basename"
-        # check downloading from the defined URLs
+	# check downloading from the defined URLs
 	for src in `echo  $urls | sed -e 's/;/\n/g'`  ; do
 	    if [ $downloaded == 1 ]; then continue; fi
 
@@ -150,24 +152,21 @@ builder_create() {
     WIGHT=`identify -format "%w" $iconfile_src`
     identify -format "%wx%h" $iconfile_src
 
-    if [ $WIGHT -lt $HIGHT ]
-    then
+    if [ $WIGHT -lt $HIGHT ] ; then
 	# Its higher so force x160 and let imagemagic decide the right wight
 	# then add transparency to the rest of the image to fit 160x160
 	echo "Icon Wight: $WIGHT < Hight: $HIGHT"
 	convert $iconfile_src -transparent white -background transparent -resize x160 \
 	    -size 160x160 xc:transparent +swap -gravity center -composite $ICONFILE
 	builder_check_error "converting image"
-    elif [ $WIGHT -gt $HIGHT ]
-    then
+    elif [ $WIGHT -gt $HIGHT ] ; then
 	# Its wider so force 160x and let imagemagic decide the right hight
 	# then add transparency to the rest of the image to fit 160x160
 	echo "Icon Wight: $WIGHT > Hight: $HIGHT"
 	convert $iconfile_src -transparent white -background transparent -resize 160x \
 	    -size 160x160 xc:transparent +swap -gravity center -composite $ICONFILE
 	builder_check_error "converting image"
-    elif [ $WIGHT -eq $HIGHT ]
-    then
+    elif [ $WIGHT -eq $HIGHT ] ; then
 	# Its scare so force 160x160
 	echo "Icon Wight: $WIGHT = Hight: $HIGHT"
 	convert $iconfile_src -transparent white -background transparent -resize 160x160 \
@@ -189,10 +188,15 @@ builder_create() {
 
     
     # copy binaries
+    distfile=${DIST_FILE[$i]}
     for (( i = 0 ; i < ${#SOURCE[@]} ; i++ )) ; do
-	distfile=${DIST_FILE[$i]}
-	mkdir -p $INST_DIR/CLIENT_DATA/${ARCH[$i]}
-	cp ${DIST_FILE[$i]}   $INST_DIR/CLIENT_DATA/${ARCH[$i]}
+	if [ ! -z "${INSTALL[$i]}" ] ; then
+	    mkdir -p $INST_DIR/CLIENT_DATA/${ARCH[$i]}/${EXTRACTTO[$i]}
+	    extract_file ${DIST_FILE[$i]} $INST_DIR/CLIENT_DATA/${ARCH[$i]}/${EXTRACTTO[$i]}
+	else
+	    mkdir -p $INST_DIR/CLIENT_DATA/${ARCH[$i]}
+	    cp ${DIST_FILE[$i]}   $INST_DIR/CLIENT_DATA/${ARCH[$i]}
+	fi
     done
 
     # create variables 
@@ -201,8 +205,15 @@ builder_create() {
     for (( i = 0 ; i < ${#SOURCE[@]} ; i++ )) ; do
 	if [ -z ${WINST[$i]} ] ; then continue ; fi
 	if [ ! -z "${ARCH[$i]}" ] ; then arch_str="${ARCH[$i]}\\" ; fi
-	echo "DefVar \$${WINST[$i]}\$" >>$var_file
-	echo "Set    \$${WINST[$i]}\$ = \"%ScriptPath%\\$arch_str${FILE[$i]}\""  >>$var_file
+	if [ ! -z "${EXTRACTTO[$i]}" ] ; then extractto_str="${EXTRACTTO[$i]}\\" ; fi
+	if [ ! $i -eq $ICON_FILE_INDEX ] ; then
+	    echo "DefVar \$${WINST[$i]}\$" >>$var_file
+	    if [ ! -z "${INSTALL[$i]}" ] ; then
+		echo "Set    \$${WINST[$i]}\$ = \"%ScriptPath%\\$arch_str$extractto_str${INSTALL[$i]}\""  >>$var_file
+	    else
+		echo "Set    \$${WINST[$i]}\$ = \"%ScriptPath%\\$arch_str${FILE[$i]}\""  >>$var_file
+	    fi
+	fi
     done
 
     # publish some other variables
diff --git a/lib/builder-utils.sh b/lib/builder-utils.sh
index 4cf2c71..b29afae 100644
--- a/lib/builder-utils.sh
+++ b/lib/builder-utils.sh
@@ -24,6 +24,29 @@ function  retrieve_file() {
     fi  
 }
 
+#############################################
+# void extract_file (src, dst)
+#
+# Description: Extract a file
+# 
+# Parameter
+#  src: source file to be used
+#  dst: path to extract the file
+#
+#############################################
+function  extract_file() {
+    local src=$1
+    local dst=$2
+
+    if [ "${EXTRACTWITH}" = "7zip" ]; then
+	7z x -o$dst $src
+    elif [ "${EXTRACTWITH}" = "unzip" ]; then
+	unzip $src -d $dst
+    else
+	7z x -o$dst $src
+    fi  
+}
+
 
 #############################################
 # check if method is available and call it
diff --git a/sample/builder-product.cfg b/sample/builder-product.cfg
index 833b068..5c632d2 100644
--- a/sample/builder-product.cfg
+++ b/sample/builder-product.cfg
@@ -12,6 +12,19 @@ ADVICE=""
 # Valid value: restrict | public
 TYPE="public"
 
+# EXTRACTWITH - defines the used programm for decompression
+# Valid values: 7zip | unzip
+# Default value: 7zip
+# This Value is only usefull in combinnation with Variable INSTALL[INDEX]
+# EXTRACTWITH="7zip"
+
+# Begin Not Implemented ---
+# DOWNLOADWITH - defines the used programm for download
+# Valid values: wget | plowdown
+# Default value: wget
+# DOWNLOADWITH="wget"
+# End Not Implemented ---
+
 
 #################
 # File object array
@@ -50,6 +63,23 @@ TYPE="public"
 #     This parameter is ptional, default value: <not set>, 
 #       WINST[index]=itWESS
 #
+#################
+# Optional Array Elements
+################
+#
+#   - INSTALL Variabels:
+#     If you specify the INSTALL Array Element Builder expects that the specified FILE is a
+#     compressed archive and extract it.
+#       INSTALL[index]="libreoffice34.msi"
+#
+#   - EXTRACTTO Variabels:
+#     This Variable only works in combination with INSTALL and forces the extraction
+#     to be done into the specified directory.
+#     This will result in the files to be extracted to ARCH/EXTRACTTO.
+#     This feature is mostly needed if a package includes more setup programms that are nemed the
+#     same. This way you place the setups into diffent dirs
+#       EXTRACTTO[index]="office"
+#
    
 FILE[0]="itWatchLogo.jpg"
 SOURCE[0]="http://www.itwatch.de/logos/itWatchLogo.jpg"