Windows 7: Messenger on proxy.

I've got to find a workaround.
the IT at our office blocked MSN messenger servers so i can't connect.
is there a way to output messenger through a proxy?



i don't want to use all these web messengers i don't like them
and i can't setup a proxy server in Internet Explorer because its blocked/not working/ mess up with other programs.

so, what can a guy like me do?
is there an add-on for messenger? a special hacked version? something?

Your IT department has blocked it for a reason...While it may be possible, are you willing to face the consequences of bypassing?

yes.
its for a stupid reason.
what options do i have?