Someone at work just sent me a restricted permission attachment. I'm logged in via OWA so I installed the rights-management add-on for IE

This didn't work so I did a bit of googling and found the release notes for IE7. Lo and behold - the first line says:

You must install the Rights Management Add-on from the RMA Download Page before you install Internet Explorer 7. The add-on cannot be installed after Internet Explorer 7.

Now this is all well and good for someone on WinXP but what about us Vista early adopters?