Welcome and I am glad it worked for you. For me it didn't, while I was playing around I tried every refresh between 50 and 60 but still kept getting the test failed message.
However it is worth a try, the test failed thing is (I think) caused by matrox overwriting the custom res stuff. Svet-am got it to work in this thread http://www.widescreengamingforum.com/node/10004 So good luck to those who try.
Me? I am back to faithful and hassle free XP....until they get DX10 working in TH and these errors fixed it is hardly worth the bother to go Vista IMO.
Glad it worked for you. Even though it was my fix, no one ever gives me credit, always Matt and his post :( LOL
http://www.widescreengamingforum.com/node/9203t=11