3GB+ of RAM, 2.0GHz+ CPU (Core 2 Duo), 500GB+ Hard Drive, Standard GeForce GFX card, ... that's about what I use and it works flawless.
You can also take a look at Adobe's requirements here http://www.adobe.com/products/creativesuite/mastercollection/systemreqs/
I am a graphics designer, and I am using Corel Draw for Graphics Designing. Now I want to use Adobe Professional CS3 package. What configuration should I look for my desktop, which can best run the package. My graphics files are around 200 MB each.