[Elecraft] K3 Help on sending RTTY (or PSK) using Utility

[Robin Diane Goldstein]

hi... a real newbie question... i'm trying to figure out how to send 
RTTY (or PSK) using the latest windows version of the K3 utility. 
i've got a laptop running Win XP connected to my K3 (with the latest 
beta firmware) and if i turn on the decode function i can see text 
scrolling in the Terminal box of the utility program (properly 
decoded RTTY as a matter of fact).  but if i type something into the 
bottom box and hit transmit (or cntl t or whathaveyou) i don't seem 
to be able to get my K3 to transmit.

i'm guessing i'm missing something obvious.

thanks!
robin (W6RDG)