If you do not like the cow, but want to keep running rc5 all the time, which is okay since almost every known program is compatible with it, do this:
go to your startup menu under start/programs/startup.... open up the properties for dnet and add "-quiet" (without quotes) after the command line path.
you can set it up like a screensaver by setting up any normal screensaver, select it under the display properties in the control panel. select the dnet option.
You can always load it to more machines before you get your password..
