This is how to get your device ID if we ever ask you for it: http://www.innerfence.com/howto/find-iphone-unique-device-identifier-udid
This is how to install an AdHoc app if we ever ask you to do that. Use this ONLY if you are given an adhoc as part of one of our beta tests:
Windows XP: http://www.innerfence.com/howto/install-iphone-application-ad-hoc-distribution
Windows Vista: don't try it. It can't be done. Just don't even try it. Find a Mac or Windows XP machine to use. We're serious.
More reading on this: http://forum.rf.com/questions-support/296-how-install-ad-hoc-distribution-iphone-ipod-touch-application.html