D-Star net check-in

I checked into Cannet D-Star net through VA3PMO-B repeater (Mississauga) tonight. The net starts at 9:00PM EDT on Friday. This is my first time to check in to a D-Start net. I bought an Icom IC-91AD a couple of month ago. It is a different kind of fun to use or hear digital voice signal. I confirmed my D-Star rig is working, hi hi.

TS-590S portal

I have come across with a nice page for TS-590S. At the moment, I am interested in the articles that explain how to monitor the rig's  CAT commands in particular.
http://homepage.ntlworld.com/wadei/ts-590s.htm

UZ7HO AX.25 sound card modem

I tried to experience the UZ7HO AX.25 sound card  modem. The program can be downloaded from:
http://uz7.ho.ua/index.php?lang=eng&id=4
I installed it on my Windows 7. After launching the program, I set the modem baud rate to 1200bps, and monitored the APRS frequency on 144.390Mhz. With the internal mic, the signal shows on the waterfall but is not decoded. I tried to raise the mic gain from the menu but it does not seem to work - i.e. nothing happens after I select the menu item for setting the input gain. I will read the manual again thoroughly to see if there is something I may be missing.