This is a 2 part question: Microsoft says that the windows 7 beta will "expire" in May '09. Does this mean that there is something within the software that will cause it to not run anymore after that date unless you purchase it? Also, what's the latest on 64-bit in general? I've read older threads that describe the problems with drivers (or lack thereof) and compatibility issues with 32-bit programs. Is that presently still the case? I would have assumed that 64-bit systems would be backwards compatible with any 32-bit program... ? So anyways should I wait a little longer before going 64?