I saw someone asking about a Trackball Mouse for their computer.... In a catalog called...Global Computer Supplies 175 Ambassador Dr., Dept. 71 Naperville, Il 60540 there is a trackball mouse...it says: Trackball has two buttons positioned on either side for right or left- handed users. The third button unleashes "windodw Lock" so you can keep one button depressed and move the mouse ball all with one hand. Trackball's accelerator lets you move the ball slowly for pinpoint precision or, roll it fast so your cursor flies. Features opto- mechanical technology for accurate pointing. Windows compatible, includes software drivers and pop-up menues for DOS applications. Connects to your PC, XT, AT, PS/2 or compatible serial port and includes a DB-9 to DB-25 adapter. 5 3/4 w x 5 d x 2 high. stock # GWC9239 - $54.95. No, I don't have any connection with this company. I was just ordering supplies for my departments and came across it in the catalog, so I thought I would pass the information on. Thanks, nancy [log in to unmask]