Here's a guide to installing windows 7.http://www.pcmag.com/article2/0,2817,2354687,00.asp
After windows is installed, you'll want to go to XFX's website and download the latest video drivers.
Windows 7 is very good at installing drivers. You may not need to do anymore. You'll want to check the device manager to make sure there are no device conflicts. If there isn't, then you're done.
Before installing any programs, surfing the web, etc...you'll want to install an antivirus program and make sure it's up to date. This will help keep your system clean. I would suggest Avira, but Avast, and Microsoft security essentials are also very good.http://www.avira.com/en/download/index.php