>How can i know if there is a diskette in the drive A:?
>Can i do that using an Api?
>Can i do that with Vfox?
>Thanks for any advice

Use my DriveInformation Class. It has an IsLoaded() method that will return true if a diskette is loaded in the drive. You can download it from the download corner (here on UT), "Classes - VCX" category.

Vlad