How to find a Vista-compatible graphics card
ATI Windows Vista Products ,
Nvidia NVIDIA - Windows Vista PC Solutions ,
Intel Power for the Future: Intel® Centrino® with vPro™ Technology and Intel® Core™2 Processor with vPro™ Technology and Microsoft Windows Vista* ,
S3 S3 Graphics Co., Ltd. ,and
VIA VIA Platform Support for MicrosoftÂ® Windows Vistaâ„˘ - VIA Technologies, Inc. have listed their Vista-ready gear.
My advice with regards to graphics cards would be to make sure that you don't buy something that's too close to the bottom of any of these lists if you want good performance, and to buy mid-range gear if you want good performance without having to take out a loan.