Hello, hope some one can help

I just moved servers from linux to windows 2008 r2 (not sure why lol)

Anyway got it all working except when you click on a links dir or any link

http://www.betablocker.co.uk/links/digital-resources-4/

will give you
Not Found
The requested document was not found on this server.

i am using

Links Directory v3.2.0

CMPS v3.2.1

vBulletin® Version 3.7.4


It is driving me dafter than i already am so...

Thanks in advance