LSME logical path & file.

Hi,

I'm working with LSMW for which i'm trying to create logical path & file.

In the above screen of T-code "FILE" i have following doubts.

1.     In the filed Physical Path, <FILENAME> what is its function ? Do the system wants me to use the same name or i can use my own name or i have to use URL like ":c/user/desktop/<FILENAME> ?

2.     Whether i need to create any file for this sake or It is just a name.

3.     What is the function of logical path & logical file or Converted Data function ?

I'm just blank on the issue.

Thanks With Regards,

Dinesh Kumar V.