i just went into the add/remove software stuff and did it from there with no problems lol dont know why it would be hard. i had a GF2 changed to my 9500 pro with no problems at all.
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WinXP Pro
AMD Athlon XP 2500+ OCed to (11x200) 2.2 GHz
Sapphire ATI Radeon X800 Pro VIVO at XTPE
512MB Kingston HyperX PC3500
Free iPod
Free LCD!