Hi,
... It's a security feature; It can be configured with MSN Messenger.
The screenshot(s) below are from MSN Messenger 7.5.0324 (Run in
Compatibility mode, as to work w/Windows XP & other; Screenshot no. 2
below).
http://img22.imageshack.us/img22/3598/alwaysask.png
http://i42.tinypic.com/2wqx5r9
Google does indeed offer Google Talk for non-Google mail addresses.
However, Google Talk accounts of this kind have actually JabberIDs that
look like "xxx...@id.talk.google.com" where is some
ugly number like "dkh498gah894h9348t". I thought that it might be
possible to connect