I have a 32-bit laptop that I've had for like two years. I'm getting a new one now, and I'm now noticing that lots of laptops come with Windows 7 64-bit. I've always heard that it's harder to find certain software for 64-bit OS's than 32-bit. Is there any truth to that? Am I significantly limited as far as useable software on a 64-bit machine as opposed to a 32-bit machine?