If it is what video card should i get for my computer. Im limited by a 300w power supply but i will upgrade that if i have too. Anyhelp anyone can give me will be awesome. Thanks
You really need to upgrade the PSU. The GPU is indeed the focus on your problems, but the PSU keeps you from doing anything about it.
You could try a 6670 or 6770 but...it'd be a crapshoot.
I wouldn't go as far as some of the other people have recommended, you don't need to spend 300 dollars on a graphics card, or even over 200, but with a good PSU, you could be fine with any choice at a 6670 or above.