I visited shops recently and checked the requirements, you need a DX 8/9 compatible card that supports T&L 3D graphics such as recent Nvidea GeForce 3/4 and ATI Radeon cards (last 2 yrs).
Built in graphics chips will be totally unsuitable for Pacific Assault eg. Voodoo, Intel Extreme, SiS, Savage S3, ATI Rage etc.