Thanks Tater.
For me theres nothing wrong with the Dialog Editor, in reality I love it and I would like to see it grow further with respect to custom controls.
Mainly, in RC2 isnt possible to remove a control from memory without removing it from the form, and while in memory I cant recompile the control source code in another project because of access denied errors.
One think, I dont know if I have seen it from other Dialog Editors, maybe from Microsoft, is to add a simple button for each loaded custom control in the toolbar and remove it with a right mouse button menu option. Buttons with the icon of the "small head" would work perfectly.