Sounds like your motherboard would support any AGP 4x/8x card (and the
box which says 8x is really a 4x/8x card).

Since you are looking for aero support, look to a Radeon 9550 with 256M
on board -- (or 9600), or a similar level nVidia adapter (at the
moment, the ATI drivers are by and larger further along on Vista
support than nVidia but that could well change in the coming months).


--
Barry Schnur