Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Btw, I just googled the specs on your card, it supports up to Shader model 5.0, so you should be good there.
Try this, copy and save your settings.text file somewhere. Try putting in my settings folder that I will included here. Give this a try and let me know.
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