Hi Jerry,

> Still, why can't one of my web apps see a file on a shared drive?

Drive mappings are user specific. If your application uses a different user account, there might not be any F: drive at all. That's why Michel suggested using a UNC path. In addition, the user account that your application runs under must have the permission to log onto the server that hosts the share. If you don't use a domain account, you might have to create the same account on the web server and the file server with exactly the same password.

If the problem is a permission issue, you can use FILEMON from http://www.sysinternals.com to detect any such problem.