Source.list has things commented out. Should I uncomment???

Noob finally got the internet working but while trying to figure that out I came across this Code: # # deb cdrom:[Debian GNU/Linux 6.0.3 _Squeeze_ - Official i386 DVD Binary-1 20111008-13:01]/ squeeze contrib main deb cdrom:[Debian GNU/Linux 6.0.3 _Squeeze_ - Official i386 DVD Binary-1 20111008-13:01]/ squeeze contrib main # Line commented out by installer because it failed to verify: #deb http:/security.debian.org/ squeeze/updates main contrib # Line commented out by installer because it failed to verify: #deb-src http:/security.debian.org/ squeeze/updates main contrib # squeeze-updates, previously known as 'volatile' # A network mirror was not selected during install.  The following entries # are provided as examples, but you should amend them as appropriate # for your mirror of choice. # # deb http:/ftp.debian.org/debian/ squeeze-updates main contrib # deb-src http:/ftp.debian.org/debian/ squeeze-updates main contrib deb http:/ftp.us.debian.org/debian squeeze main contrib non-free the last line was added by ME while trying to fix the WIFI problem. I suspect that these were commented out by the installer because it couldn't connect to the internet. They look important and look as tho they shouldn't be commented out anymore but I'm not sure if that's the right thing to do or not should these be un-commented??? Cheers GGGGRRRRRrrrrrrrrrrr......note The URL's have been changed to make them not URL's as I cant post url's til I have a few more posts.

URL: