Believe it or not, Hauppauge provides support for the PCTV products now (!!!). Pinnacle sold the lot to Hauppauge, and you can find PCTV support now at www.pctvsystems.com, where you'll find that they offer email support.
As for the analog scan -- no idea. I have a first-generation PCTV HD Pro Stick, and I never did get analog to work. Digital over-the-air (which is what I got it for) works well. The included software was, at least in my experience, completely unreliable for PVR functionality -- so my Pro Stick now lives on a MythTV server, where it has been rock-solid.
Just not for analog.
And yes, those things do get warm.
BittMann