Hello Eric, Have a look at the RS232 library written by a PhD student named Edward Cheung at Imperial College. The URL is: www.doc.ic.ac.uk/~ih/doc/pic/piclib-0.21. There is also various other routines in this library including IR tranceive etc. I hope that this help you: Lee Hewitt (Manchester ENGLAND) =================================================== Lee Hewitt Manchester ENGLAND Home E-Mail: LHewitt104@aol.com University E-Mail: L.Hewitt@eee.salford.ac.uk ===================================================