please help me ...
i have a problem in my software when i transit it to another computer the crystal report asking for userName and PassWord .
I programming it by visual Basic and Access DB .

Let's try the old user account issue/problem. Since you don't use a Microsoft Server and such my bet is you forgot to add that user and password to the faux Windows machine that hosts the database and serves up this access file.

That is, if I'm John, John will have an account on both machines.

Also, you have to deal with shares.

-> Frankly I found all this to be utter carp. Over a decade ago I dumped all that and went over to the dark side with MySQL. Never looked back.