After purchansing PPM 10, I downloaded both the 32-bit and 64-bit versions. My wife later installed one of the two versions, but she can't remember for sure whether or not she installed the 64-bit version. I know that Win7 64-bit systems will allow the installation of 32-bit software, but for the life of me, I cannot determine whether or not the 64-bit version is installed vice the 32-bit. I am new to Win7. I'm sure that this is a silly question for most of you gurus, but I can't figure it out.