Easiest way to encrypt ConnectionString in ASP.NET 3.5

What's the easiest way to encrypt my db connectionstrings in my web.config, both for my Visual Studio 2008 project files and on IIS?

I don't need anything fancy - the apps I'm making are all intranet. I just don't want the db passwords to be plain text on my development PC or on the web server.

Google brought up some info about using aspnet_regiis, or doing it programmatically with System.Configuration.SectionInformation.ProtectSection()

But does Visual Studio 2008/.NET 3.5 provide any easier ways than these? 

If not, can I run aspnet_regiis on my Visual Studio 2008 development PC too, or is this only for IIS webservers?
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