BizTalk side-by-side deployment sample

Anyone tried to get side-by-side deployment to work in BizTalk 2004? Anyone found any examples of how to upgrade your orchestration so that new instances use the new version, whilst existing long-running instances continue to use the old version? I know I couldn’t, so [url=http://www.geekswithblogs.net/kvix/archive/2005/11/01/58819.aspx]here is my attempt at a sample[/url]. Thanks due to Stephen for helping out when I hit a brick wall that later turned out to be a BizTalk bug 🙂