Hiding RTD calls

[shonmm03]

Is there a way I can "hide" an RTD worksheet function call? The RTD
worksheet function syntax is not particularly user-friendly - specifically,
there is no way to provide help for arguments specific to a particular
server, nor a list of available RTD server names to an excel user. I'd like
to wrap the RTD call in a UDF or something. Is there a good way to do that
and still get the function to update in real-time? It seems some third-party
vendors have done this in the "proper" RTD way (i.e. in a way that does not
rely on excel timer events and such.) Any pointers? Thanks.

 

[shonmm03]

I realize I can drop the RTD call into a VBA function or xll, but I suppose
I'd rather avoid that option. Is there any way to put hide it or wrap it in
a com or c# call?