Input windows registry

Hello, I need to help with a script to add an information in the registry in windows vista, but users do not have administrator profile for this reason the script does not work.

I tried the following codes.

Shell 'regedit /c "\\essencis.com.br\netlogon\reg\skype_not_file_transfer.reg"'

or

WriteValue("HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Skype\Phone","ListenHTTPPorts","0","REG_DWORD")
WriteValue("HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Skype\Phone","DisableFileTransfer","1","REG_DWORD")

Someone can help me with this.

regards

Paolo Zanolla