Hello I just bought Hitman Absolution, but it frezzes up and crashes I'm running ver 1.0446.0 with steam

My pc spec's are:
Processor: Intel(R) Core(TM) i5 CPU M 430 @ 2.27GHz (4 CPUs), ~2.3GHz
Windows 7 (32bit)
8 Gb Ram
Card name: ATI Mobility Radeon HD 5165

So what am I doing wrong? Please Help?