As of 4/21/11 I have successfully migrated this website to the latest version of Umbraco, v4.7. The actual migration should have been simple (since there was no database changes), but instead of upgrading the site I already had, I chose to perform a new install, and then manually migrate over all the content from old to new. I did this in part to re-learn the setup process, but also to avoid carrying over lots of orphaned image files, macors, XLT files etc that I was no longer using.

In addition, I took advantage of the new Razor features to eliminate some of the asp.net user controls I was previously using, and instead re-coded those routines as Razor macros with equivalnet functionality. Can't say that I have mastered the nuances of Razor programming yet, but so far I am a fan of being able to put in code changes directly thru my browser, instead of writing and compiling an asp.net custom control in Visual Studio, and then needing to uploading the dll and ascx files.

To be sure, there are still lots of things I will continue to do as asp.net user controls, but for a simple site such as this, Visual Studio won't even be required.