Hi Paul
If you are not worried about HD then I suggest you get used to tuning satellites by installing the WinTV software that came with your HVR3000. I use a splitter and the dish is permanently powered from a STB so I can't help with options for powering from the HVR3000.
Since WinTV isn't on my system anymore (it conflicted with mediaportal), I'll wing it and try to remember what I did to get Freeview on WinTV....
After installation:
Get the channel manager up by going menu--suite manager
Select the "sources" tab
Select DVB-S in the sources list on the left hand side
In LNB settings I put lo: 107500 hi: 107500 switch:0 (or 11300,11300,0 for the other LNB)
I selected 'manually scan a frequency'
Type in 22500 in the symbol rate window
Can't remember whether I used horiz or vert on the polarity - try both.
In the frequency window I put in the transponder freqs for the D1 sat (one for each scan) (12456000 and 12483000).
Hit SCAN. Change the freq and then scan again.
This is the same post I provided on geekzone at
http://www.geekzone.co.nz/forums.asp...&topicid=20392
Hope that helps. I know it's not MCE but will at least get you freeview.
Trying to get freeview working on MCE (or VMC) is a real mission requiring a registry hack to fool MCE into thinking DVB-S is DVB-T (available on the hauppauge uk website) and then (in NZ) trying to organise an EPG. So I found it best to get a grounding in something (relatively) simple before tackling MCE.
As indicated in the above posts, MCE does not do freeview HD (via UHF aerial) and to get it working on an HTPC is the subject of numerous posts on a bunch of NZ websites.
Good Luck.