Manual radio tuning help please

[clarkTX]

Tonight is not my night. So I'm just trying to learn how to properly check in with Tower using the G1000 and radios somewhat "realistically" and I can't get them to work as describe in the Lesson pages. This time I'm trying to manually tune the radio as described in the lessons. What is supposed to happen: look up the tower frequency in the WPT tab of the G1000 (check), highlight the tower frequency (check), press ENT to move the frequency into the Com1 input field (doesn't work), or press 'c' and manually enter the frequency into the Com 1 input field then swap the freq into the active field (check), open ATC and see the menu options for Tower there (doesn't work; the ATC menu is stuck at some Approach comm for a nearby airport and "back" takes me only to "select nearest airport" menu). I can't seem to get much radio/Garmin stuff to work as described tonight. Do the manual tuning/ATC menus work for the rest of you all? Is there something obvious I'm missing here? If I manually tune Com1 to a weather station I'll hear the broadcast, but if I tune to a Tower the ATC menu won't recognize it... ThanksClark