Your PSU is fine for the card (it is rated at 200W, but that is mean power output).

Just make sure that it is a PCI graphics card ( Do NOT buy a PCI-Express or an AGP version). Also, try buying it from a store like Newegg.com instead of a place like BestBuy since it will be a lot cheaper.

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@ironman1505 wrote:

I'm thinking of buying a Geforce FX 5500 for my Dim2350 but have read it requires the power supply to be 250Watts. How can I find out what my power supply is?

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The 200 watt power supply in MY GX110, AND GX1'S works fine with a PNY Geforce FX5500 PCI. Ive run this card in many many dells for over a year with no failure or problems. Its not a power hungry card like a 6800 ultra AGP so I would not worry about it.
Ive also used this in an Optiplex 170L without issue.

http://stores.tomshardware.com/search_getprod.php/masterid=4180758

http://www.pny.com/products/verto/value/5500pci.asp