LOL! My first laptop I put this on (running the Linux client, BTW) indicated I was working on a project and that I had completed 0 out of 10,000,000 steps. Since it was maxing out my temp sensor, and the fan was roaring, I exited out.
My work (Windows XP home) laptop is now dedicated to this.
Going through the advanced config program start (or direct editing of the configuration file) will allow one to set the computer in question to use a max given percent of CPU time and allow for less heat generation. For laptops running more or less continuously, I set the display at some angle to the keyboard slightly below 90 deg. and place the laptop on its side with the fan outlet on the up side. Laptops seem to run the coolest in that position.