In all of the confusion over the .wmf issue comes a bit of hope from one of our favorite vendors.  VMWare has a Browser Appliance virtual machine available for free download.  It's a BIG file (258Mb zipped) so be sure you have a plenty of time for downloading.  The appliance can be run in either VMWare Workstation or the free VMWare Player and provides you with a safer environment for web surfing.  Thanks to John Holmblad for pointing this out to us. 

(Be sure that you are running the latest version of VMWare Workstation, since there was a security issue disclosed several days ago.  Also, note that the VMWare Player installion process asks if you want to install the Google desktop search application, which should remind you of yet another vector for the .wmf vulnerability to manifest itself.)

UPDATE - two more sandbox approaches to browsing were sent to us.  Morland Halliday said to check out www.greenborder.com, and Derrill Guilbert pointed us to www.sandboxie.com.  Thanks to both of you!