I had almost almost given up on finding something that works and doesnt fill the tool bar with crud when I came across Sightspeed - A freeby and Iview which offers limited free 1:1 both these come in mac and PC versions
Sightspeed is quite good and my daughter got it up and running on her own but it seems very sensitive to the poor bandwidth of her wireless link ( surely it can't be my NTL end

) but as its free I can't complain!
She is home this weekend and I will give Iview a test and report back if we get it working.