Well of course as soon as I posted this up I found an answer to my own question.. that Street Deck uses Direct X to make the MapPoint map look 3-D! Doesn't look like RR will have this functionality any time soon..
Anyway, what are my options for 3-D map software for use with RoadRunner? I know iGuidance is one.. This info has been a little hard to find b/c there doesn't seem to be any central database on what software does what or a standardized way of listing a program's features, so I've just been sifting through threads. The "everything you wanted to know about GPS" thread had some info in it, but it only offers iGuidance as an integrateable 3-D mapping software, and I was hoping that in the vast amount of software available there is more than just a single program that can integrate into RR with 3-D maps..