Thanks, Mike!
So, upgrading to Ultimate was not as easy as it should have been.
I bought a new laptop for a friend of mine on Labor day (Monday), and Best Buy was selling Vista Ultimate for $70 bucks if you bought it with a new system.
I roll back my working perfectly copy of TV-Pack (installed over my OEM Velocity Micro Gen 1 DCT System). The only reason I rolled it back was because I thought Ultimate may not like if I over-install with a newer feature-set installed. (Turns out that it was unnessessary).
I did the over install, and once everything was settled down and all the Updates were installed I put the TV Pack Files to work. I reboot, do one last windows update to make sure I have the right drivers for the DCT's I hit the green button, and I get an error with the Ehome program. The report says somthing about the UI.
This upgrade path did not take.
I roll back as far as I can and uninstall some other things (none of which weren't there when I had the TV pack working on Premium). Reinstall, still no joy.
I take my boot drive, swap it out for a clean drive, put my OEM install disk in, install my OEM copy of Premium, and try to upgrade to Ultimate. I found out that you can't upgrade from a NON-SP1 Vista to an SP1 Vista. I have to spend the next 3 hours getting the computer ready, just to do the Upgrade to Ultimate.
Once that whole process is done. I try to install Ultimate, and in the middle of one of the boot cycles, one of my RAID members gives up and the system hangs. The Ultimate instillation thinks that it was at fault, and backs up to the OEM Premium, and I'm out another 90 minutes of life I'll never get back. Not only did the install fail, I lost my RecordedTV Drive. (I've lost it before, and that's a chance i took just installing the TV pack, so no real disappointment there)
So, I disable my RAID in the BIOS, install again, and this time it takes. (had did the happy dance all over my living room). I then get every remaining Vista Update, I install the TV Pack, reboot, and it takes as well. I then go to set up the Tuners, and it doesn't find ANY of my DCT's that are plainly visible in under Network. I had forgotten to put my Vista Key in. No big deal. I put the key in and reboot. I had some small issues, and it only saw one of my four DCT's at first. I go to give it my CableCARD License Key (that I've used in the past with no problems) will not take. I don't understand this, but OK. (Who do I even have to talk to to get that problem fixed. At least if my Vista Key says i can't use it I can call Microsoft and have them fix it, but a DCT Key, where do I get resolution of that issue) Luckily, at some point in the past my OEM sent me a second Vista Premium key with DCT Key, and I'd never had to use it, so I had a spare DCT Key (how lucky is that?) and this different key works.
I now have 4 DCT's, and and HDHomerun running, all my overlapping HD tuning is mapped to all 6 tuners (that is the best part, I don't have to decide if i want to use cable or the antenna to record, it does that for me (small aside: my local cable service provider doesn't carry CW or NBC in HD in my city)).
I love the TV pack, and think it's worth the hassle I dealt with to get it to work.
Now I just have to go out and find all the TV I lost and Reinstall my MKV support.