Create New User Using IIS/ASP

I'm running IIS5 on a Win2K server, and I want to have an ASP page that
creates new users. I have some simple code to test this, but am getting
a "500" error when I run it. The ASP looks like:

<%

strDomain ="Foo.com"
strUser ="Foo1"

' Create new user with password
Set oDomain = GetObject("WinNT://" & strDomain)
Set oUser = oDomain.Create ("User", strUser)
oUser.SetPassword = "password"
oUser.SetInfo
%>

Just for this testing, I've added IUSR_machinename to the Administrators
group, but am still getting the 500 error.