listener progarm

hi for every one,
i have a visual basic progarm used to examine the files up on the server so that when they reach these files it run Batch program is sending these files to the Mainfarme.
i identified certain time to operate the program through the schedule task, but this may cause a problem because the file may be delayed from reaching the time specified through the schedule task, which I want is a program that running the length of time so that when the file was found, it operates batch file that send the file to the Mainframe.
i mean i need listener program for the file when they find the file it send it to mainframe.
thank you

You can develop Windows Service (check link in my signature) or setup a Windows Scheduled Task to run your program at certain interval.

thank you but can you more explain.

please if any one can helpe me in this issue i apperciate that

thank you