According to
DELL you have a small or low profile desktop case which means you have to get a low profile graphics card.
Good news, it does appear that your model does have both PCI and an AGP graphics slot.
The trick is finding a decent graphics card in a low profile form factor, since most manufacturers only released entry level cards in a small form factor.
I did a quick search over at
NewEgg and came across quite a few AGP cards, however, only a few are low profile so I suggest using this as a guide to noting all the low profile cards and what GPU make/model they use and compare that to Counter-Strike and what they recommend as the minimum graphics card supported
