AGP GRAPHICS CARD PROBLEMS... help please

Ok. im no noob. i build computers on the side and know a fair bit about them. i have tones of nice boards like 2,8 intels or better that use agp graphics. i try to put one of the 20 agp card i have lying around in (nice cards)... geforce 128 and 256's and windows 7 dose not recognize any of them ... same computer i load xp on another hd and i dont have any problem with the cards.
i go to device manager and they always say they are standard vga cards...
is agp just not compatible with win 7 is there a hack.
what the ^(*&% im about to pull my hair out cause win 7 is all my customers want and nobody has any money to build a 500+ dollar system so i have to build all these cheap systems.
please help

This thread may be enlightening.

http://www.sevenforums.com/graphic-cards/66127-sapphire-2600pro-512mb-agp-not-aero-compatible.html

Apparently you need AGP specific drivers for your motherboard for Windows 7, and as most motherboards stopped supporting AGP five years ago, you're kinda out of luck.