Wondering the same thing, anyone try this?
Peter & Michael,
Esri Maps for SharePoint 3.0.1 (latest released version) is not supported on SharePoint 2007; it is only supported on SharePoint 2010, SharePoint 2013, and now SharePoint Online (part of Office 365). In fact, I don't believe the installer will even let you proceed if you are using anything prior to SharePoint 2010. Also, please note that previous versions of Esri's SharePoint product are not available.
Hope that helps,
Katy
maybe do an export and use a javacript customized piece of html to show that exported data on a Google or Bing map in stead? Check out Codeplex or Gmaplist if you're interested. Surely, there will be other alternatives out there, but these are my two cents. Good luck, tim