Granting access to remote computers

I am using Apache 2.2.11 on a Windows Server 2003. I have managed to get Apache installed. But I am stuck on one small issue having to do with rights on the 2003 server.

In one part of my app the user can select to see a directory listing of files on another computer. I display the list as links which allows the user to click on the link and download the file.

All this works fine on my XP server and I can even get it to do that on the 2003 server when I start Apache from the console.

But I wish to run Apache as a service on the 2003 (as I do on the XP machine).

Also I use UNC in addressing the remote computer with the files to be downloaded.

How do I grant rights to the Apache Web Server to read the directory on the remote computer when it is running as a service?

re: Granting access to remote computers

In case anyone is wondering what the solution to the problem was. No password was assigned to the apache service initially. Once a password was added the problem went away.