i did the following
i've downloaded faircrack.tar.gz and hildon.tar.gz to mydocs
than did this
cd /home/user/MyDocs/
mkdir FAS
cd FAS
tar -xzvf /home/user/MyDocs/faircrack.tar.gz .

than this
tar -xzvf /home/user/MyDocs/hildon.tar.gz .
sudo gainroot
mv faircrack.desktop /usr/share/applications/hildon/
mv faircrack.png /usr/share/icons/hicolor/48x48/hildon/


than i moved faircrack to a folder called FAS on my docs
thats wht i did

thankx for the help