I do alot of reformatting, since i tend to slow down my computer with waaaay to many programs/problems. My question is if i install Vista Ultimate x64 on one HDD, and install all of my programs, which include both 64-bit and 32-bit applications, on a secondary HDD and be able to run both 64 and 32-bit programs with my OS. Further, if i do need to reformat my first HDD and reinstall Vista x64, would i still b able to run the 32 and 64-bit programs, mostly concerned if the new OS will still b able to run 64-bit programs in actual 64-bit after reformat and reinstallation? sorry if its confusing