The very first thing I did when I got my Mini 10 was format the hard drive and install Win 7 Pro (rather than starter). I have done this many times in the past as most of the drivers and software are on Dell's site or the included CD. But for some reason, they are not easily found. The Dell Digital TV software is not listed under Windows 7 and I could not find it anywhere until I read this post. I tried installing WinTV as the tuner is a Happuage, but it was saying it could not find a supported device! The Dell Digital TV software is, in fact, under Windows XP. It's labeled as "CyberLink - Application" and the download is R214971.exe.
Thank you again, and I hope this helps with others!