Exactly what do you mean by cannot install? How are you trying to install it? You should then be able to install the actual original disk/CD onto your computer [then the update--see * below], then [When you backed your data up, did you use the sqz option?See knowledge base on backups] open your .sqz backup from within the program.
You will probably run into difficulties in XP with version 1.x because of the foxpro errors, however. Hopefully, if you choose ignore every time it will work for you. Otherwise, you will have to get the foxpro patch (see our site for the XP link at http://rug1.tripod.com)http://rug1.tripod.com).