A common question we get on a daily basis is, "What are the system requirements if I upgrade my current release of Autocad?" I have added some new links on the side of this page to direct people to Autodesk's recommended system requirements for each BSD product.
The two most important items to look at are RAM and your graphic card. I would not recommend anything less than 2 GB of RAM for the 2007 products. The graphic card should be a tested and approved card by Autodesk. The 2007 products have a built in optimizer to help configure your 2007 product to work more efficiently with your graphic card. Here is an additional link to see what cards have been tested. Graphic Hardware List.