WMI Help!!!

Hey all, when I try to set the following WMI property, I get the followng error: "Value out of range". I can successfully access the value but can't set it. I am trying to change the computer description. What am I doing wrong?

Dim objEv As System.Management.ManagementObjectSearcher = New System.Management.ManagementObjectSearcher("SELECT * FROM Win32_OperatingSystem")
For Each objMgmt As System.Management.ManagementObject In objEv.Get
objMgmt("description") = value
objMgmt.Put()
Next

whatever the value is ( for example "ASUS p5Q"), i get a "value out of range" exception when VS gets to the objMgmt.Put() function. And "description" isn't read-only according to MS.

What is wrong with this code?

Any help would be greatly appreciated. Thank you

Download Scriptomatic by the Microsoft Scripting Guys to see if they do it any differently. Possibly the BIOS doesn't allow it