Colin,
With all due respect, I stand by my original response. It cannot be stressed
enough that SP3 is not a finished product. Many of the users looking for help on
these newsgroups have no idea what "Release Candidate" and "Beta software" mean.
Neither the OP or the web site he posted make mention of this fact. While you're
correct that the instructions section of the download site includes a warning,
it's a weak one.
I may be wrong, but it's my opinion that someone taking the OP's advice and
installing SP3 will end up with their main computer hosed. And if you think the
OP will be around to help them get back in business, check out some of his
contributions to the Vista General newsgroup.
Nepatsfan