Dear HENRIK LEAWANDER, I think You neea a SENTINEL driver for your NT. NT 3.51 or 4.0 is detached fron LPT1 port to prevent hang. Bye Ciao -----Messaggio originale----- Da: Henrik Lewander [SMTP:henq@HEM.PASSAGEN.SE] Inviato: domenica 14 dicembre 1997 16.49 A: PICLIST@MITVMA.MIT.EDU Oggetto: 16F84 programmer for NT? Hi people! I've built one of the very simple com port driven pic programmers (16C84, F84), and it has worked very well. The trouble is that the software only works in dos/win3 or win 95. Are there any software for any (free) programmer that works in NT? Lpt or com port doesn't matter. -Henrik