thanks Adam and Dave for the quick response. i've used the MAX chips in the past but it is always easier to use inverted PIC-to-PC.

the PC part is just fine. the other embedded device i'm speaking to won't respond, so i'm wondering if it is waiting for the 24V levels...

i don't know what micro is in the device - maybe i'll open it up and see what is in there.

does anyone know if the MAX232 chip can handle a 0-5V input properly? if embedded device has a MAX232 inside it, and my PIC is talking to the MAX part, will it read 5V as a "1" input?

thanks again!
Pat