Best practice for OnConnect?

Hello,
I'm writing a server application using INDY10's TIdTCPServer. The
application is a VCL.NET form.
Every time that a client connects I would like to add an item in a TListView
component. The help for the TIdTCPServer highly discourages the use of
consuming task (access to VCL components) inside this event. Is adding an
item to the TListView considered a consuming task? If so, what would be a
good approarch to handle this case?

Thanks,

Roberto