try to use the vista driver. it works for me (the audio and modem), although i don't understand why.. (and maybe risky)

no problem bose00, glad i can help.

i've tried the vista modem driver, can dial and connect - function as it is maybe compaq misplaced the driver (vista <-> xp). just found it weird that there's no driver for windows xp in their driver page.

for the sound, i have to remove the previous driver (amd) and then reinstall the vista ones - works too (although if u run the amd one, it will prompt an upgrade).

the only issues is the driver 'has not passed whql' alert..

Um, just launch it via the Help and Support link in your start menu. Or alternatively, Windows key + F1

Lol, mine also can't detect too before. Already curse curse the shop and the card, then open the mem-slot back to check and figured what the problem really is - the second slot (upper one) really need to push really deep for it to slot properly. it turns out i didn't properly slot it in making it nonfunctional. Place it with 50° angle to the slot, push in harder, snap!, close the lid and boot the nb back - problem solved for me.

well.. maybe not a solution for you, but it is for me. first time changing ram for notebooks and yeah, my nb is v3250au.