If you went to DevDays make sure you take a look at the IssueVision sample code located on the DevDays 2004 DVD. It has some great example code for all sorts of things ranging from installation and deployment to using web services to update data in a semi-connected environment.
it also seems that a new IssueVision 1.1 version of the code is going to be available at some point in time to and will implement code using WSE 2.0.
// In IssueVision 1.0, this method returns an instance of the web reference for
// the IssueVisionService, with credentials attached as a custom SOAP header.
// In version 1.1, the section marked below will be replaced with WSE 2.0 logic.
Stepping through code like this is a great way to learn how things are done. I hope more application examples are on their way from Microsoft.