AGP video card suggestion needed for older PC

I need some help and am getting lost in all of the information related to specifications I know very little about. I know I am limited to the AGP 4x slot I have but for $100.00 or less can someone recommend a more current video card I should consider? I know the system is old but with what I use it for (casual home use, casual gaming) the $100.00 is more attractive than a new PC at this point in time. Here are the specs I thought mattered, if you want to see more let me know what that is.

Motherboard:
CPU Type Intel Pentium 4, 2666 MHz (20 x 133)
Motherboard Name MSI 845GEM / 845GLMS / 845GVM / 845GVM-V / MS-6526G(L) (3 PCI, 2 DIMM, Audio, Video)
Motherboard Chipset Intel Brookdale-G i845G
System Memory 1024 MB (DDR SDRAM)
BIOS Type Award (11/07/02)

Display:
Video Adapter RADEON 7500 SERIES (64 MB)
3D Accelerator ATI Radeon 7500 (RV200)
Monitor SyncMaster 932BW/932BW Plus/BW1932/932BWE plus(Analog) [NoDB] (HVGPA01279)

Multimedia:
Audio Adapter Creative SB0350 Audigy 2 ZS Sound Card


Yes, I bought a barebones kit that was originally planned to be an HP unit. At the time it greatly outpaced my prior PC and was worth it for the learning I gained about PC's. But I still have much more to learn.

Thanks in advace.

I'm sorry but that is OLD!!!

Sapphire Radeon X1650 Pro: http://www.newegg.com/Product/Prod [...] 6814102073