Mailing lists allow you to get support via email only. Here are a number that I’m involved with and provide great value. Again each has its’ own character. I recommend that after joining a mailing list that you lurk a little and see how people interact before jumping in asking question after question.
Smallbizit – http://groups.yahoo.com/group/smallbizIT/
SMBManagedServices – http://tech.groups.yahoo.com/group/SMBManagedServices
SMBVirtualisation – http://tech.groups.yahoo.com/group/smbvirtualization
MSSmallbiz – http://tech.groups.yahoo.com/group/mssmallbiz/
ANZ SMB IT Specialists – http://tech.groups.yahoo.com/group/ANZ-SMB-ITS