/x is the command to force the image to expand. If you omit that setting it should stay the same size.
Take a look her: http://www.terabyteunlimited.com/downloads/ifw_en_manual.pdf
This is the manual for the utility from the people LANDesk license it from.
LANDesk Silver ESP
The One-Stop Shop for LANDesk Enhancements
Update - WoW & State Notifier now integrate for even more functionality
Update - State Notifier now detects machine and user Idle states
I'll try that asap.
EDIT : It's working !! Yeah