I always seem to spend ages looking for this when i need it so this is the link to terminator
http://www.microsoft.com/download/en/details.aspx?id=2846
Ive recently done some user group sessions around BizTalk and Behaviour Driven Development and Acceptance Testing.
Ive uploaded the videos and samples for these sessions to the following codeplex site.
http://biztalkbddsample.codeplex.com/
They will also be on CloudCasts soon
Enjoy