i am not properly understanding " check through windows explorer"
please explain it
I believe Veena means to forget about VB for the moment, and use Windows Explorer to examine the properties of the module file with which you have a problem. Perhaps the file has been somehow set to a read-only attribute, or has been opened by another application which refuses to share.
You could also try opening the module in another program such as Notepad, to see what happens - just remember not to save it!
Also, please provide more detail. For instance, what version of VB are you using, and what is the exact wording of the error message?
EDIT: Rats! Veena just beat me to it. :D