Vista Tutorial - Trouble with media Centre with Vista Upgrade

Hi all,
I have just upgraded my laptop from xp to vista Home premium edition. I have
a HP pavilion dv2166eu, with an HP ExpressCard DVB-T TV Tuner. this worked
just fine with my media centre while running xp windows with service pack 2.
Now when I try to use vista media centre, the tv card will pick up all the
stations and list them, but it will not actually display anything on LIVE TV.
After a few minutes it comes up saying that there is no signal, but I know
that the card is just working fine. It seems to be a problem with the actual
media centre maybe ? I have had great support from HP but they cannot seem to
find out what the problem is. I have updated all the drivers with no effect.
I brought a media centre laptop as I was soo impressed by my media centre
desktop !! By the way, if I use HP quickplay the tv card works well, but I
want it to play in media centre.Every thing else works well in media
centre...its just live tv that wont. Has anyone any ideas please ?
thanks in advance,
thebluehealer