Since I have installed Vista I have not been able to get MSN Messanger working I have shouted screamed, reinstalled, uninstalled, google, yahooed, Msn and generally scratched my head. It turned into my pet project everytime I got bored with a bit of coding to have another go. Well today has not been the best of days but I thought I would have another crack at it. Last hour I have destroyed my network and reinstalled it to still no available so I thought I would have another crack at Google. I found this page today .

http://www.vista64.net/forums/vista-general/26735-msn-messenger-wont-login-81000306-a.html

Which had this solution:
Try this:-
Click start
- Type: cmd
- Right-click cmd.exe when it appears under Applications
- Click Run As Administrator
- Type the following: netsh int tcp set global autotuninglevel=disabled
- Press enter
- Restart your computer

.. It worked a treat. If I ever meet David McGown or the people who run vista64.net I will buy them a beer. Horrah.
Only one more thing left to conquer now on vista which is burning a CD... ;-)