Not sure if there can be fix or get around this issues while playing on Vista 64, i kept getting crash once in awhile. My pc runs Morrowind and Skyrim fine, for some reasons i cant play Oblivion

Does anyone know what i can do?

Post a dxdiag or give some relevant information. It could be because you have an integrated intel chipset. Morrowind doesn't need a lot of GPU power as its mostly CPU based and Skyrim is more optimized.