Just to let people know I finally resolved the issue where my HVR-2200 tuner was causing my PC to freeze
See this locked post: http://www.geekzone.co.nz/forums.asp?forumid=83&topicid=22760&page_no=2#137565
I am running VISTA SP1 on a Gigabyte GA-73PVM-S2H MB with at GT8600 card in a fusion black case.
Every time I tried to watch freeview (DVB-T) or analog on this card the system froze & I had to reboot the PC.
The issue is that the HVR-2200 does not work in the PCI x1 slot on th GA-MA78GM-S2.
If I take out the video card (thus use the on-board video) and put the PCI 16x slot the card runs fine!!!
Bloody annoying as I now have to decide what I should do - by a new MB or ditch the graphics card.
At least it works I suppose