Q Trackballs, Mouse alternatives

[Donde Smith]

Our library system has been using keyboards with built in trackballs
primarily due to lack of space for mice. We have tried two different
types and find that they get dirty very quickly and "break" frequently.
We are looking for alternatives that would require little space and hold
up under constant heavy use. Unfortunately cost is a major factor as well.

We would like to know what other libraries are using with the public or
students and what you would recommend. A earch of the archives found only
a couple of messages from May 1997 that pertained to this topic. Please
reply to me. I would be glad to summarize for the List if appropriate. 

TIA-

Donde Smith
Oxon Hill Library
Prince George's County Memorial Library System, MD
ds0025 at mail.pratt.lib.md.us
dsmith at capaccess.org