Need help deciding on video card upgrade for dell dimension

Ok, I admit it, I screwed up. I bought a Dell Dimension 9200 last year. Forgive me forum gods.

Also, I go fooled into thinking that I would be able to "live with" the 7300SE that came with this system. I have failed, and you may revoke my geek license for not building my own system as I have done in years past (getting older, real life etc etc etc).

Now, I need help rectifying this issue. I'm on the prowl for a good graphics card, ballparking about $200-$250. I want to play Oblivion, WoW, Crysis(when it comes out). The issue is that the power supply with the Dell maxes out at 300W, which SERIOUSLY cuts out my options to upgrade. What can I do to get a decent graphics card at this point?

I'm afraid I won't be able to chuck the dell system. I'm already stretching my goodwill & budget both to allow for a $200 upgrade (it's complicated, but I can have an upgrade, but "not a new box"... ce la vie). Is there even a card in the market that exists for my requirements? 8800s are out due to power reqs I guess. What about 7900GS? Is it powerful enough? What will the power reqs be for the 8600 cards? Should I just rip out the PSU from the Dell and replace it with my own for cost? Is that even recommended for Dell's freaking custom motherboards?

Will it be Ok to stick an external power supply into a Dell? I'd probably be voiding my warranty, but I don't care about that as much as not having the Motherboard go up in smoke after I power it up. Have other people replaced Dell PSUs before on this forum? Any experiences?

Oh and thanks for the superfast reply.. and I thought I was the only person awake at 2AM PST =)

There will be no need to replace the psu in your 9200. Dell is now offering the 8800 GTX as an upgrade, this maybe pushing a little too hard, but for lesser cards up to the 8800GTS there is no problem.

DellUser1, I'm reading your sig. So, you're saying that you stuck

http://evga.com/products/moreinfo. [...] &family=23

into your Dell and it worked out of the box? Yeah, I got the Dimension 9200 because I knew they'd used basically the same system in their XPS line (and Dell's business line is usually a tad higher in quality than their consumer line). I've got an E6400 though, but I'm still hoping that the new 8600 cards or the 8800 320MB cards or

http://evga.com/products/moreinfo. [...] &family=23

will run in my system without too many issues.

Note that I'm preferring Nvidia because of the linux driver issues as well (both companies suck at linux support, but ATI is absolutely abysmal from previous experience

Ok, so ATI sucked the big one and delayed again. I'm just going to go ahead and get the 8800GTS 320MB.

Did you use regular fans from newegg? I'm looking to basically replicate your setup since I know it will work for sure with my dell. I'm gonna get the eVGA 8800 from newegg and was hoping that the fans would be available there as well?

http://www.newegg.com/Product/Prod [...] 6814130082

There's a PNY 8800 available for cheaper at buy.com, but I don't know if I should experiment much considering I'm not sure the 375W psu would work well with it. It's also not a configuration that's been tried before like your dell working with the eVGA card in question.

http://www.buy.com/retail/product. [...] caid=15890

I don't suppose I can convince you to post a picture of the inside of the case as well -- just as a reference for me? Oh and feel free to tell me that I'm a complete n00b and give me some advice -- I've been out of the assembly game for a few years now and I'm out of touch.

Thanks.