CyberLink PowerDVD Problems

[PC_Nerd]

I have had PowerDVD 6.0 OEM edition for some time, it worked perfectly fine.
I recently tried to install PowerDVD 7.3 Ultra Deluxe.
It wouldnt install because 6.0 couldnt initialise setup.
I deleted all folders, files and registry keys relating to Cyberlink.
Installed 7.3 just fine.
I take note of the fact that Microsoft SQL server Desktop Edition needs to configure during installation (this was left behind from Sony ACID Pro).
When I try to configure it, and I confirm, it hangs the whole system, requiring me to hit the reset button.
I uninstall 7.3, reinstall 6.0.
6.0 Hangs after configuration.
I think.
I uninstall Microsoft SQL Server Desktop Edition and all other crap ACID left behind, (namely, although it is a bit grey, 'user-mode driver framework or something' and 'windows something compression').
Reinstall 6.0.
Still hangs after config.
Any ideas? I want either this to work or a comparable alternative to consider.

I have
AMD XP 3000+
1gb pc3200
nv 7600gs
gforce 2 chipset
onboard ac '97 sound
all latest drivers

Any help would be very apreciated.