I have success to install sdf 2.3 and add controls to a newer tab within vs2005 importing the dll named OpenNETCF.Windows.Forms.dll
But once I have dragged the control (for example a Button2) to the form it is shown at form as a square containing the name of the class I dragged: "OpenNETCF.Windows.Forms.Button2"
Curiously, If I run the project, the appearance is shown ok on the device...
There is something more that I have to do before designing?
Thanks.