I don't think that control will work on 64 bit systems. It's a shame because it's a nice one
Oh yes it will, I can use it in a WindowsFormApllication but I have not got it working in a ClassApplication in AutoCad yet.
You just need to run/install OWC11.exe and it can then be added to you Control ToolKit and voila.
I have used it in 64bit VS non AutoCadApplications,.