goto
http://www.skype.com/intl/en/download/skype/linux/
download the one for ubuntu feisty 7.04,
called skype-debian_1.4.0.99-1_i386.deb
download will ask you to store the file, or open with gdebi-gtk (package installer), choose package installer.
When install done, skype icon is in your Internet startfolder, start it and use your existing skype id/pass or create a new.
