Shoutbox

I deleted my last thread 'cause I thought I had the problem fixed. Turns out it didn't work, and I can't live on trillian.

Anyway, as it were:
I get an error message when I try to install either WLM 8.0, 8.1 or 8.5 BETA.
When Tried using MSN messenger 7.5, just comes up with "not valid win32" error.
Anyway, what I see:

Any help, I would be greatful of.
Yeah, i'm using Vista Ultimate, no other add-ons for messenger installed.