In a message dated 4/5/99 8:51:24 AM Central Daylight Time, [log in to unmask] writes: << I got a Logitech Marble track ball >> In a message dated 4/5/99 8:51:24 AM Central Daylight Time, [log in to unmask] writes: << I got a Logitech Marble track ball. >> So did I. It worked great! However, some day soon expect it to start behaving badly (mostly not going where you try to put it). This usually means the thing needs cleaning. As time goes by, this happens with greater frequency. It is difficult to clean easily. Small lint and grime buildups are inaccessible to without down time and tools A more user-friendlier device is the Microsoft "IntelliMouse TrackBall" which does not require screwdriver disassembling to clean. Regards, WHH 55/38/37