Originally Posted by pwned3
The ps is only 300 so if I bought a card requiring power I would have to add a new one
Yeah, that power supply is way too small to do much of anything with. So, a new good quality power supply needs to be your first purchase. I'd then go with a new video card if you are into gaming. There is no need to upgrade the motherboard as long as it works and has the features you need, so I'd move it on down the list for now.
Are you able to determine the actual manufacturer and model of the motherboard?