Regarding batch file (to map a free drive)

hi,

  I need a batch file which can check for free drive (unmapped drive) say from A: to Z:

  Once free drive is obtained then I want it to be mapped with some network path.

 Right now I just know how to map a drive using "net use" command. I dont know logic (if) programming in batch files.

Regards,
Kalyan

 Can anyone helpme........ in this regard.