Thanks Noel96, I filled out a request for tech support by e-mail but don't know when they will get to it. Yes I do know that they are a wonderful company to do business with. They once replaced one of my style discs that had become corrupted (no questions asked) so they must keep good records too. I chose the e-mail route because I have a hearing problem so try to avoid the telephone as much as possible. I decided to post this on the forum to keep this issue upfront so others may be informed before making the same mistake I did. I was totally unaware of the 32 bit/64 bit issue with Windows 7 before I got into it. In the end if it can't be rectified easily I may just use my old xp laptop for BIAB and make it a dedicated machine since I don't use it for anything else, until such time (if ever) that I can afford to purchase the program already loaded on a hard drive and give up messing with all these discs.