for data loads that replace referenced data by new data (that validates against constraints of course), you can quickly disable constraints checking like this:
http://www.sqljunkies.com/WebLog/roman/archive/2005/01/30/7037.aspx
Mainly developing c# and asp.net, this blog should document some thoughts and issues with .net 2.0 that come up during a normal day/evening of work. It's purpose is mainly to receive my frustration about certain issues and at the same the the chance of helping someone hitting into the same obstacles.