I had the following problem :
i had a script that used the opendir() command on remote folders (opendir("//machine/folder") etc.), and everything worked well while I worked on windows95 and apache from EasyPHP 1.5. But when I tried to have it work on windowsNT (the same EasyPHP package), everything went bad. After a long, long time I finally found the problem : there was something wrong when launching Apache as a service. If you launch it normally, there is no problem!
If this can help someone...