Ya its a Ati firegl v5100..I just want to put something in it mostly for everyday use.. I sometimes game..On ebay there is a cheap geforce gts240. I know its a little old but i don't have much of a budget right now.
That's an alright power supply. First, it won't blow up in your face. More often than not, the stated info on the PSU is accurate. Then it's delta. They can make very high quality power supplies if they need to (they build PSU's for a lot of comps like antec) but usually the OEM ones they make, although not very efficient or high in quality, they'll do their job.
Just don't expect it to power anything above a mid range card.
For a system using a single GeForce GTS 240 graphics card NVIDIA specifies a minimum of a 450 Watt or greater power supply that has a combined +12 Volt continuous current rating of 24 Amps or greater and that has at least one 6-pin PCI Express supplementary power connector.
Depending on which brand and model of GeForce GTS 240 you get you may or may not need a 6-pin PCI Express supplementary power connector from the power supply unit.
Your current power supply will have no problems powering your system using the single GeForce GTS 240.