I would like to upgrade my wife's video card on her computer. She currently has an ATI Radeon 9200 with 128 MB or memory on it running on a bone stock HP Pavillion A720n with a 250watt power supply.

I am trying to help a friend out. They have an HP Pavilion Media Center a1619h Desktop PC. I already know I can't help them with a RAM upgrade due to limitations on the machine, but I was hoping I ...