Need Help with Grabowski ERJ-145 Panel

[Skua]

I've never run into something as maddingly simple and frustrating as this. I just d/l'd the latest version of Grabowski's ERJ 145 panel for FS 2002, and I cannot figure out how to tune the com or nav radios. When I click on them or put my cursor over them, I'm not getting any "+" or "-", or any other indication of how to change frequencies.

Tried to write to the author, but I got a "Mail Delayed" msg from the "Mailer Demon" (gawd I hate that evil critter!). Anyhow, if anyone can help me with this, I'd appreciate it. Thanks!

[RollerBall]

More likely to do with your aircraft. Look in the aircraft.cfg file (open it with Notepad or Wordpad). Look for this section

[Radios]
// Radio Type = available, standby frequency, has glide slope
Audio.1

[J41]

Hello and Happy X-Mas

Ok to tune them in to to anyone either Nav, Com, Adf, Tcas etc just like the real Aircraft you click on the small button next the the numbers once and that will highlight the first part of the freq (ie 110) then click on the round dial at the bottem on the screen - or + to adjust,  then click the small side button again and that will now highlight the other part of the freq (ie 50) then click again to put the new freq at the top to make that one active.    
                      I hope that makes sense if not post again.