What Emulation Type are you using?\
If you just want to increase the "Zoom" level then Font size is what you're looking for. If you want to be able to adjust the zoom on demand then I'm not sure what other options you have.
Thanks for the reply
I am using the TelnetCE 7.3
I have changed the Font sizes as well but it doesn't make much of a difference.
It displays bigger but the screen itself is still bunched into the top left hand corner.