Silverlight 2 and 3 development - on the same box

One of the disappointments with the recent Silverlight 3 Preview release is the inability to install Silverlight 2 and 3 at the same time. Now VisualStudio 2010 is suppose to solve this but in the meantime you must choose which one you want to target. And given currently there is no go-live license for Silverlight 3 [reasonable at this point] what can you do? Well Amy Dullard [a program manager at Microsoft] has a work-around.