I think this is a simple matter of choosing your monitor's screen saver.
In XP or Vista, right-click on your desktop to get to the settings for your display. Or you can do it from the Control Panel.
In XP, choose "Properties" and then click the Screen Saver tab. Choose your screen saver (I use "blank," which gives me a black screen; I find anything else distracting). Adjust the settings so the screen saver kicks in when you want it to (you should set the screen saver to launch before your computer itself goes to sleep). I don't have Vista anymore so can't give you the details, but it works pretty much the same way.
Thanks for your reply. I do use a screen saver that works until I put the computer to sleep; then the screen saver is gone and there is only the test pattern of the monitor. That is what i am trying to change.
That feature is something that is contained within the firmware of the panel itself and not something that is easily changed.
I am sure that there may be some way to do so (if you are a firmware programmer that is familiar with such things) but it is something that could void your warranty if you have any issues with the display.
Ed Shumpert Thinkcentre/Desktops Launch Readiness Program Manager US Service & Support