I had to change the boundary checkline as I got a MAV on colour3s wpf, to this for it to work too btw dude:
If xpl>2 And xpl<xres-2 And ypl>2 And ypl<yres-2 Then
Nifty dot tunnel Shockie, and neat on showing the central pivots of the rings.
Wonder what that'll turn out like in FB mate!

Cheers and all the best,
Clyde.