skype installation error

[dzz]

Hello every one , yesterday I screwed my updates.

I hit this commands: Install skype in ubuntu 12.04

sudo apt-add-repository "web address $(lsb_release -sc) partner"
sudo apt-get update && sudo apt-get install skype

but I made a mistake and i put wrong web address now I don't know how to fix it because every time when I hit updates it's shows me this massage E:GPG error: "wrong web address" quantal release: The following signatures were invalid: NODATA 1 NODATA 2

please help. thanks

[aomimezura]

Which OS? You can use 'sudo gedit /etc/apt/sources.list' to edit the list of repositories. In Ubuntu, skype is already in the repositories.