Well, you didn't mention what the graphics card is, so I'm guessing it's an Intel Integrated, using shared memory. Bad news if you want to play Halflife in its full glory. A memory and GFX card upgrade would be a perquisite, though if it's working fine now, maybe just a memory upgrade would do.
Not too bad though, new computers are always nice.
Well, it's from Dell, so I don't know how much they let you customize their systems. But if it was a custom built, you could have gotten a card from a generation previous for probably about the same or maybe a little more, and probably gotten double the performance from it.
I have no idea what the hell you just said, but I think it had something to do with assuming the card came with the PC, which it didn't. It was bought seperately.