Thank you for your replies...
the solution lies here:
The only thing I had to do was to:
1. go to the properties of the folder that contains my db
2. go the the WEB SHARING tab
3. click on "Share this folder"
4. check "read, write, *script source*"
5. and so it is done.
I`m working on Win XP pro with IIS 5.1 (SP 1), MS Access db.
But now I have the following question... is there a possibility to occur a security problem now that I`ve checked that "web sharing" function... or it`s just works fine like that?????