Debian: Wvdial : command not found

I upgraded my Plug to Debian to get my Reliance 3G data card to work.

I used the instructions here. http://plugcomputer.org/plugwiki/index.php/Installing_Debian_To_Flash

Now my data card is getting detected as /dev/ttyUSB0

However I am not able to get any dialers to work.

When I try to install wvdial it gives me this error.

Package wvdial is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'wvdial' has no installation candidate

I have added this line to /etc/apt/sources.list

deb http://ftp.us.debian.org/debian/ squeeze main contrib non-free universe multiverse

but it gives me this error.

W: Failed to fetch http://ftp.us.debian.org/debian/dists/squeeze/Release Unable to find expected entry universe/binary-armel/Packages in Meta-index file (malformed Release file?)

E: Some index files failed to download, they have been ignored, or old ones used instead.

I have tried compiling the package as well, but it requires libwvstreams which is not to be found.

Any help would be highly appreciated.