The only real way to make sure is to test it and see if it works! IIS should launch any application under the same user account as the script is running.

The default IUSR_Server account has very little access to much at all. Choosing another user account will allow you to set the level of access to a network resource using the ACL on that resource. (Look on the security tab of the windows share properties page for the share that you are trying to access.). The easiest way to test this is to try and connect to the network drive using the 'connect as a different user' option. This will allow you to see whether you can make the connection.

inman