HI Guys.
Thought I'd throw this one in to the mix. There are many threads here with regards to drift alignment and all of them confused the **** out of me, or I couldn't use it because I cant see some of the stars from my back garden. I found this very straight forward and easy to use.
Hope this helps others battling with this method of alignment.
http://www.rogergroom.com/astronomy/info_polaralignment