What exactly are you hoping to acheive? You might try the 2008x64 (non-R2) driver: <ADMIN NOTE: Broken link has been removed from this post by Dell> Just keep in mind that this server graphics chipset has severe limitations compared to a desktop: An integrated VGA-compatible video subsystem with an ATI Radeon 7000-M, 33MHz PCI video controller. This video subsystem contains 16MB of SDRAM video memory (nonupgradable). Maximum resolution is 1600 x 1200 with 64,000 colors; true-color graphics are supported in the following resolutions: 640 x 480, 800 x 600, 1024 x 768, 1152 x 864, and 1280 x 1024. When the optional remote access is installed, the video resolution is 1024 X 768.   
I upgraded my PowerEdge 2800 from 2003 server to 2008 R2 and everything is working great except the video setting. My display is listed as a standard vga ( I have the built in ATI Radeon 7000) and I can't seem to find any Dell drivers for it. Thanks
Video driver for 2008 R2 upgrade