Best Commercial Vulnerability Scanner in 2007

[not_it]

Commercial you say? Try McAfee Preventsys. They were formerly an independent company but then they got bought out by McAfee in the past year or 2. I use it regularly at work. It has nessus-based scans as well as a many other modules for industry-specific regulations (HIPAA, SOX, etc).
What is nice is its web-ui and tasking system. The tasking system allows you to distribute the scans for respective teams to fix their stuff- ie desktop, server, network equipment.

I am familiar with its use in an enterprise environment and I'd say it does the job.

I think you're probably looking for an auditing as a service type tool, though. This would be more of an in-house compliance solution.

as far as remote registry svc I'd have to ditto morganlefay. It's a system admin necessity if you're running Microsoft SMS or other system admin tools- and it is or can be restricted access