Your going to find out its the size of the Excel. thats the problem. 64 will not change it. or very little.
After doing a little research, it looks like the 32 Bit Version of Excel can only use 2GB Ram where the 64 Bit Version can use more. The only thing is tools like ASAP Utilities cant be used. I am going to uninstall the 32 bit and put in the 64 bit.
I just need to find a copy of office somewhere....