You've got some serious airflow problems if your card is overheating and it's the only one in the case.
Download & run MSI Afterburner (found
here) to check temps first.
If it's around or above 100*c, open up your case -- I imagine you must have a LOT of dust & whatnot clogging your intake vents to clean out. If there's still a problem, try keeping one side of the case completely open and buy some more case fans to mount inside it.
I have a temp program already - it's saying it goes between 88c and 92c on average. It's once it hits 99c it freezes. I just bought all new parts and a case which has 2 fans going and now i have the side open and it freezes less but i dont want it to freeze at all. I now have a fan blowing into the cpu externally but im still concerned at its average temp. Is that 88 - 92c average??