I know we can do "<dnn:DDRMENU MenuStyle="Simple" id="dnnNAV" runat="server" />" to specify DDR Menu for an HTML skin (i.e., prior to parsing).  However, there does not seem to be a way to add the registration for the dnn:DDRMenu tagname in the HTML so it is registered in the resulting .ascx (i.e., "<%@ Register TagPrefix="dnn" TagName="DDRMENU" Src="~/DesktopModules/DDRMenu/Menu.ascx" %>").  Is there a way to do this or must we upload / parse the HTML and then manually add the tag registration?

Thanks for the advice Timo but need just a little more clarity - to put your advice into my issue I would then replace:

<dnn:DDRMENU MenuStyle="Simple" id="dnnNAV" runat="server" />
with:
<object id="dnnNAV" codetype="dotnetnuke/server" codebase="DDRMENU" MenuStyle="Simple">