Lowell you are a STAR!
Used your idea and came up with this
=Cint((Avg(Fields!QTime.Value)*60)/3600)&":"
& cint((Avg(Fields!QTime.Value)*60)/60)&":"&
(cint(Avg(Fields!QTime.Value)*60)-(cint((Avg(Fields!QTime.Value)*60)/60)*60))
and it works!
Cheers.
Mike