What 3D Video Card?

I am simming on a very fixed income (Soc. Sec.). My PC is a Dell Dimension 2350 with 512Mb Ram and a Pentium 4 processor at 1.8GHz. My Graphics Controller is the stock Intel(R) 82845G/GL/GE/PE/GV (whatever that means).
I would like to add an inexpensive 3D video card. I would like to try to get one at EBay. I got one before only to find that I needed a PCI not an AGP.
What do I need for compatibility with my system?.
I would like to add an inexpensive 3D video card. I would like to try to get one at EBay. I got one before only to find that I needed a PCI not an AGP.
What do I need for compatibility with my system?.