>So if I use MySQL I have to get my users to have it on their machine when they buy the product? Wouldn't it be easier in that case to use something like Access? I know there are lots of apps out there that you can download and install that use db's but dont require you to have the database actually installed. Sorry if I'm confused. I haven't done pc development apps in a few years :) I stick to web based (mysql for everything...) so using mysql is appealing to me but not if I have to have them install it.

No problem, I understand I come from several years of Web Development experience before my PC development. Well, whatever you have Access or MySQL, the user will have to purchase and install. MySQL is free, and they wouldn't have to purchase it at least, Access they would have to purchase.

If you don't want them to have install anything, you can use XML or some other file system based approach, if it is just one user you won't have to worry permissions, file access and read/writing of files at the same time by users.

I hope that helps.

Morgan