Still have issues with groups in calendar

I posted the message below to the Zimbra Forum, but haven't gotten any responses. A couple of you from this list responded that I should use the Zimbra internal distribution lists, but when I create those internal distribution lists, I still can't select the list and have it expand within calendar. Very frustrating! Again, any thoughts would be appreciated.

Thanks,
Cheryll McCormick
University of Wisconsin System Administration
Office of Information Services

Messages posted to Zimbra Forum
"This is going to be tricky to explain. We are currently in Beta testing mode prior to going to production this summer. We are using Active Directory for both GAL lookups, as well as for authentication. This has worked very well with the mail portion of Zimbra, however, I am running into issues with the calendar portion. Specifically, has anyone been able to have groups that are defined in Active Directory expand so that when you select the group for a meeting, it can schedule meetings for the individuals in that group rather than having to selecting each group member separately? At some admins' advice, I created an internal Distribution List for a test group. That didn't work either. Then I configuring the GAL for both internal and external AD lookup, but when I tried to create a meeting and select a Distribution List that I created in the internal directory, nothing displays in the search. If I manually type the name of the Distribution List and just go ahead and schedule the meeting, it will put the calendar on the individuals calendars, but I have no idea if I've selected the correct people for the meeting since it doesn't tell me who's on the list I just typed.

We are running zcs-NETWORK-5.0.13_GA_2791.SLES10_64.20090206110511. If anyone has any experience, or suggestions, I would appreciate your help."