take a look at Digipan (no cost)http://www.digipan.net/
the program lets you use default macros
or create and edit them to your needs.
there are RX and TX windows so
you can compose your messages while you
are receiving and then send when you are ready.
K7AGE has nice videos on digital modeshttp://www.youtube.com/watch?v=jQpBGh9RMEQ&feature=related
are you using your own interface or a purchased one ?http://www.geocities.com/n2uhc/interface.htmlhttp://www.tigertronics.com/