Questions/Recommendations

I've been suffering from problems with the initial boot on my homebuilt computer and I'm beginning to suspect that my lack of funds at the time of construction and the purchase of a cheap case with a 300W power supply is the main problem. The board is a DFI UT 250GB NF3 with a 3200 64 Athlon chip with a gig of PC3200 memory. Reading a few forums it seems that the 300 watt supply needs to be at least 350 and preferably more. I also had to go cheap on the graphics card although for the price (around $40) it's been surprisingly efficient. It's an ATI 9200 Radeon with 128m of memory. I now have some funds to upgrade and will be going to get the new power supply today and can probably spend around $100 on a new graphics card. Any recommendations in that price range? Thanks,Art MartinThis is posted also in the main hardware forum. If that's a bad thing I'm sorry but I really need an answer fast on this one since my trip to Frys Electronics might just be this afternoon.