The very useful and very frustrating UISpy.exe seems to have gone missing from the latest Windows SDKs. After a bit of hunting around (and several gig of downloads later…) I found it in the “Windows SDK for Vista Update” (works for XP too…); the link is:

http://www.microsoft.com/downloads/details.aspx?familyid=4377F86D-C913-4B5C-B87E-EF72E5B4E065&displaylang=en

If all you want is UISpy, just select ‘Windows Development Tools’ option in the installation options window – you don’t need the rest.