Ok I mamage to make it work but I still have a Problem.
Wend I drag and Drop the Interface I get this inline in my class.

IMPLEMENTS _DAcadApplicationEvents IN "c:\program files\common files\autodesk shared\acax16enu.tlb"

If I am correct acax16enu.tlb is use by version 16 of AutoCAD. This implemetation will not work for previus version.

Is there a way to find out what object correspond to this .TLB?
>
>When you implement an interface, you must include code for every method in that interface. The code can be empty, but it must be there.
>
>The easiest way to do this is, as Hugh suggested, to drag the interface from the Object Browser into a PRG; then just fill in the methods you're interested in.
>
>Tamar