If I understand this Vista pricing right...My current anydvd is Vista /Vista64 compatable and I don't have to purchase anything?

And If I wanted to turn my current version of anydvd into 2 license version, all I would pay is an additional $10 US?
Thanks

As of version 6.0.9.2, you can use AnyDVD in Vista. You do not have to purchase anything.

For the second question you are probably best left to ask Slysoft. But my best guess is that if you didn't buy two at the same time, you will have to buy a second license at the full price. But as I said, let Slysoft have the final word on that.

I think SS allows a user to install on other PCs in their household and use the same reg key as long as the prog is not used simutaneously on all the user's PCs.

This is more of an honor system, than anything else

yes zaq, this is correct, it's been mentioned a good few times on here

I keep AnyDVD running in "Back Ground" on my PC 24/7, if I do the same thing with another PC, will that be a problem?

Well it is against the license agreement.

I would say if you are not using both PCs at same time ie ripping movies simultaneously, it should be alright
It is the honor system, as the product does not use activation and hence the user is left to their conscience for correct use.