Recently I try to install windows 7 on old Presario which use ati Xpress 200m Chipset. To install the graphic driver, i found 2 drivers which available form AMD and Microsoft. You can automatically update your graphic using microsoft automatic updates. I prefer to use Legacy Drivers from AMD.
Version: Ati Catalyst Version 10.2
Windows Vista/7 32-bit: Download
Windows Vista/7 64-bit: Download
If you have problems installing the drivers, right click and select run as administrator.
The driver also avalable on microsoft update catalog: Open this link using Internet Explorer.