Hey scp,
When the dialog box appears, it normally gives you a hint of what hardware it's looking for? For example:
^ requires a driver for "Liquid Mix". Also, have you tried completing the hardware wizard to see if Windows picks up the driver on it's own? At the end of the wizard, it will ask you if you would like to see the dialog again.
Is everything working properly, 3D games, sound, printers, scanners, and add-on cards, everything like that?