>you probably >can use the 92 software, or at least the 92 Plus software. There's a command in the Ti92+ called "Send to TI-92 Plus/TI-89"... ...and I have just receive an advertisement saying the Ti89 can be connected with a Ti92. ... hahaha ! the Ti89 has got 640ko of RAM (and 2Mo of Flash ROM)...640ko ! Bill gates was saying it would be enought for a PC !