PHP IIS 4 and network drive

I have 2 PCs. On the first, I installed PHP and IIS 4 on a windows NT server and on the second windows NT server without PHP or IIS4. But my web server (the first PC) haven't enough free disk space to store data on it. Then I want to access with PHP on the second PC and for example list the shared directory. I try opendir and readdir with "\\\\SERVEUR\\TEMP\\". I tried to connect a network drive with "net use F: \\SERVEUR\TEMP ". But he didn't work. How to do that please... Maybe my explain is not enough explicit but my english is a little poor so if you think to know what I want to do write me... Thanks a lot