Heres a selection of graphics cards that you might be interested in to help improve your gaming experience and to help you to play more modern games.

Evga Nvidia Geforce GT 520 1GB DDR3 Memory Pci-e HDMI Gaming Pc Graphics Card
ATi Radeon RAGE HD 5450 1GB DDR3 Graphics Card HD5450 With HDMI, DVI & VGA
Asus NVIDIA GeForce GTX 550Ti 1GB GDDR5 Graphics Card PCI Express2.0 900MHz HDMI
NVIDIA GEFORCE 8400GS 1GB PCI-EXPRESS GRAPHICS CARD
ASUS RADEON HD 4550 (512 MB) (EAH4550DI512MD3) Graphics Card
Palit 1gb Geforce 8400gs Super+ Pci-E 2.0 Graphics Card
ATI Radeon HD5450 1GB PCI-E HDMI Gaming Graphics Card
CCL Choice AMD Radeon HD 6770 1GB Graphics Video Card
XFX ATI Radeon HD 6770 HD6770 1GB GDDR5 PCI-E Graphics Card
Nvidia Quadro 4 NVS 285 128MB PCI-E dual Video card+VGA