I have a Nvidia Geforce 9100 4gb of graphics memory will it run GTA 4? all other components seem to be above par
It will run it, but not at maximum specifications.
First you need to know what type of Graphics slot you have in your computer.
PCI or AGP or PCI Express X16
Then you go from there. If you have only the older PCI slot, I wouldn't even bother as these are too slow. AGP is ok but not as good as PCI Express.
You need atleast a GTX 260 too run on the highest settings