Well, I tested out 3 macro programs and came up with the results.
Other two doesn't try but,
"EZ Macros 5.0" (from American Systems) seems to be easy enough.
You can download this
here.
I just with it wasn't a trial version.
All I have to do is click "add",
select "Remember mouse and keyboard events",
select "Press a Hot Key to launch the macro",
assign a hot key and select "This macro works with any program" (must),
on the next window, slide the playback speed bar to 'fast', click on the "Create/Edit" button and type in the window "This is only a test" (no 't' or 'enter' marks),
click "ok", "next" then name the macro.
If you did this right, click on the "Activate Hot Keys & Hide" button, then go to Jazz2 (multiplayer),
press 't' and press the assign macros (I would use keys 'F1'-'F8", then press enter to send the message.
The only problem is, if I press enter too soon before the typing macro finished, the "Chat:" appears again. So once you let the macro finish, press enter and
RUN!!!!!
This way, I can say stuff like...
"The base is under attack!"
"Somebody get our flag back!"
"I'll attack their base."
"Target eliminated."
Join Jazz2 servers and find me using this if you want