Tricky91, I did a quick google search of your specs, and if im correct, it is compatible with x64. This may be a bit overkill, but maybe a dual-boot is an option?
With that said, I know nothing about windows 8!
But in windows 7 it gives you an option to install x86 or x64.
Maybe partitioning off a little HD space for an x64 OS will enable you play the sim until you find a better solution?