Here's some simple perl code you can use for a geek/nerd/dweeb "decoder ring":
ENCODE INTO BITS, HEX, UU:
Just change the "b*" to "h*"
for hexidecimal or "u*" for
DECODE FROM BITS, HEX, UU:
I include my favorite messages that I otherwise might not write out in clear text in my signature file along with the decoder code. It's enough to scare away most. But, I've found those technically superior types get more of a kick out of "decoding" (cut and paste to UNIX/LINUX
command line) the message during their more productive moments. ;-)