I am using NT 4 sp 6a with PHP 4.01 pl2 on IIS 4.  When I use the opendir command (or the dir object) it works fine as long as I try to open drive c (c:/).  If I try to view the directory on any other drive, it fails.  The drive can be a second hard drive (d:/), a mapped drive, a cdrom, etc. Here is the code and error:

Warning: OpenDir: Invalid argument (errno 22) in
C:\Inetpub\wwwroot\trinityweb\test.php on line 12

here is the offending code:
chdir("f:/");
$dir = dir("f:/");
// have also tried $dir= dir(".");

I have verified that I have full permissions to f:/.  I can also read the f:/. file from that directory ok to verify in php that the drive exists.

Please let me know as soon as this is fixed.

Scott