How do I work with keys in memo's

Hello there everyone.

        I am trying to get it so I can let a user input keys, but not see
them.  I need to do a few things with them and send back to the memo
box.  (Basicly I need him to input to Memo1 and not see anything...
But the program then do its things and return to memo1.  I can return
with no problem but keeping his keys from bing seen???

Curretly it  showes his stuff in memo1 and then echos back in memo1.
(Using KeyPressed functions in Memo1. )

Please help!

If possible please relpy to