If you try to run your Windows Scripting Host scripts on Windows 2003 Server 64 bit, they are not likely to run.
Recently, after upgrading 10 Terminal Servers to Windows 2003 Server 64bit with Citrix Presentation Server 4.0 64 bit installed on them, I realized one of our applications compatability scripts was failing, and would not run at all.
After searching around and talking to people, I found out that the Windows Scripting Engine is 64 bit. And if wanted my script to work, I needed to explicitly call the 32 bit version of cscript.exe, from c:\Windows\SysWow64\cscript.exe.
The 64 bit version of cscript.exe is localed in the c:\windows\system32
And the 32 bit version of cscript.exe is located in the c:\Windows\SysWow64\