>Dear all,
>I've got some problem here, would you help me?

It looks like there is not much relation between question 1, and the other two questions. The recommendation, in this case, is to ask unrelated questions in separate threads.

>1. I made a form to BACK UP all of the table (data) in my application. I've put the "CLOSE TABLE ALL" before copying the table in a specific direction (ex.floopy disk). But it doesn't work and there is still a message, something like: "FILE IS IN USE". As far as i know it means that there is a file that is still opened or used. Why is that?

If you do COPY FILE first, there is no problem if somebody has the file open.

>2. Can i install my application (after i made it become a setup application) in the same computer where there is an original source code inside?

Yes.

>3. I've done the process of making setup application and it result 4 disks in my harddisk. Can you tell me the best way to copy all of the content of the disks into floopy disks? 'coz i've tried in usual way and it didn't work.

Just copy the contents of each of the disk directories ("Disk1", "Disk2", etc.), which the Setup Wizard creates, onto a diskette.

HTH,

Hilmar.