Save yourself some grief
The chipset and other drivers for the old motherboard are on the hard drive along with windows, your data and programs.
In your situation I have picked up another hard drive, for about $40 you can get an 80gig. Change your existing drive to a slave and the new one as the master. Do a fresh install of windows. Install the new drivers for the mobo. Then about 2 days worth of updates, patches, and fixes etc. At this point all your data and programs are safely secure on the original drive.
You can pull all your data from the original drive and after you are happy that all is well with the new drive format the original drive. Now you have an up-to-date windows, just the programs you wanted to reinstall, your data, and a second drive for storage. Time consuming but far less time consuming than trying to fix the existing copy of windows
I hope that is helpful for you
Monton