What about a streams module that does encryption? Of course, it'd require people to run a real OS instead of dos/system... -- J. Eric Townsend [email protected] 415.604.4311 NASA Ames Numerical Aerodynamic Simulation | play: [email protected] Parallel Systems Support, CM-5 POC | '92 R100R / DoD# 0378 PGP2.1 public key available upon request or finger [email protected]