Little update: this is a Vista BDA driver problem, I've got it closer to working with the original 1.3b install (ie without using rel's extra bda_s fle above) after a few registry hacks. It's not really working properly though, since every few seconds it goes into jerk-o-vision, then back to smooth. Better than not loading at all though.
Anyway, I added the lines below to the registry, then deleted the bda dvb-t entry in the same location:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\TV\Tuning Spaces\42]
@="{B64016F3-C9A2-4066-96F0-BD9563314726}"
"Name"="TT-DVB-S"
"Description"="DVB-S Tuning Space Entry"
"Network Type"="{FA4B375A-45B4-4D45-8440-263957B11623}"
"Frequency Mapping"="ex:2d,00,31,0"
"System Type"=dword:00000002
"Network ID"=dword:ffffffff
"High Oscillator Frequency"=dword:00a1be40
"Low Oscillator Frequency"=dword:0094c5f0
"LNB Switch Frequency"=dword:00b28720
"Input Range"="ex:2d,00,31,0"
"Spectral Inversion"=dword:00000002
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\TV\Tuning Spaces\42\Default Locator]
@="{1DF7D126-4050-47F0-A7CF-4C4CA9241333}"
"Frequency"=dword:00b7e238
"InnerFECMethod"=dword:ffffffff
"InnerFECRate"=dword:ffffffff
"OuterFECMethod"=dword:ffffffff
"OuterFECRate"=dword:ffffffff
"ModulationType"=dword:00000014
"SymbolRate"=dword:00006b6c
"Polarisation"=dword:00000002
"OrbitalPosition"=dword:00000000
"Azimuth"=dword:ffffffff
"Elevation"=dword:ffffffff
"WestPosition"=dword:00000000
ProgDVB also needs this change to recognise any hardware at all, although it doesn't have the lag problem. Alt-DVB and DVBviewer work fine with or without it (and without any lag). Other programs don't work at all regardless
