i wonder what graphics cards laptops use, i've got a mobility radeon 9700, 128MB Unshared. i've played GTA:SA on my laptop on full settings except for resolution and everything was fine, no lag no nothing.
on my other PC i have a sapphire ATI card (its old) and i play CS:S with medium everything and the 102? by the other number (its formatted like ???? / ??? or something) and it plays fine, getting pings of like 60, 50. I've looked around for the GTA:SA minimum requirements:
1GHz Intel Pentium III or AMD Athlon Processor
256MB of RAM
8x DVD-ROM Drive
3.6 GB of free Hard Disk space for a minimal install
64MB Video Card with DirectX 9 compatible drivers ("GeForce3" or better)
DirectX 9 compatible Stereo Sound Card
Keyboard & Mouse
Its quite small, so you should be able to play it with a PCI card, why not? just don't crank everything up to the full.