I am using the
SyncToy 2.0 Beta from Microsoft at the moment to assist in my development work.
I am running Vista and Office 2007 but most of my clients are still running Windows XP and Office 2003. So when I develop Excel applications I need to be able to build and test them in the same environment.
In order to make that happen on my Vista PC I am running a virtual PC that has Windows XP Pro and Office 2003 installed on it.
The Virtual PC 2007 software is free to download and install from Microsoft.