Upload Problem on IIS 6

[eluser]Unknown[/eluser]
I have a problem on Win 2003 IIS 6 for upload files.
I changes C:\php\Temp permission to everyone Full access with no effect:
Is there any diferrent on IIS?

A PHP Error was encountered

Severity: Warning

Message: getimagesize() [function.getimagesize]: open_basedir restriction in effect. File(C:\PHP\TEMP\php1AAA.tmp) is not within the allowed path(s): (c:\site\www)

Filename: libraries/Upload.php

Line Number: 569