I had a Sparcstation 4/330 with optical mouse, without the pad. Of course I wanted one, and eventually found one, but in the interim, I did what an old hack suggested and printed myself a grid on paper. Works peachy. The spacing of the grid will determine the tracking speed of the mouse. Graph paper works if you get a fine grid. Try .5cm. Just to get you on the road til' your pad gets to you. My old hack told me they had a problem with the pads disappearing and had a file on their network for folks to just print themselves one for the day. Jeff