Ok.. I'm not really good in working with DNN but I had the same problem.
This is how I solved this problem:

First of all I created a new control in the module definitions.
(Check some manuels how to do this...)

You have to give your new control a key.

After this you can use the following code I've got from the Module Developing Manual:

Globals.NavigateURL(PortalSettings.ActiveTab.TabID, "mycontrol_key", "mid=" + ModuleId.ToString());

You simply have to change mycontrol_key into the key of your new control.
This would make a path to your new control and just have to link it...