Instead, IT staffers remotely logged into Windows systems, changed their settings so that they would use Open DNS servers, and then logged out. Typically it took just a few minutes, Hobbs said. "It was very easy for us to remote in to every one of our computers and just configure them for OpenDNS."

OpenDNS CTO David Ulevitch wouldn't say exactly what new features you'll get with OpenDNS Enterprise, but he said that it will come with a 24x7 support upgrade option and give users more control over how they filter sites.

The free version of OpenDNS caps the number of Web sites that can be "whitelisted" at 25, and it doesn't let users globally blacklist all unknown sites. Lush is now taking a look at OpenDNS Enterprise, which will let the company block all but a select group of pre-approved sites and whitelist many more, Hobbs said.

National Veterinary Associates has already purchased OpenDNS Enterprise, one of about 25 customers to do so as part of the company's early access program. Brown says that the enterprise version's improved reporting features and better level of filtering control make it worth the money.

But will other enterprises sign on as well? Ulevitch hopes so.