I vaguely seem to remember that the Plato Courseware also ran, or they had a version for, the TI99/4A. They were pushing it at schools and the like IIRC. My first real computer was a TI....Still got it here somewhere, complete with the expansion box and 24k of additional ram, and a 5.25" FDD. Cheers Geoff Roberts Computer Room Internet Cafe Port Pirie South Australia. netcafe(a)pirie.mtx.net.au