automated pscp between a web server and a Linux server
 

I am setting up an automated file copy mechanism between a web server (IIS 5.1) and a Linux server. I am using classic ASP and .cmd files in windows to generate the automated pscp commands for copying the files from Linux server to web server.
The problem is, these auto generated pscp commands runs fine from command window, but it fails in the web server. Please provide suggestions on overcoming this problem.

Path to pscp executable? Permissions? Try to redirect the output to a log file
Or try to run a check script from a scheduled task