David,
If your project is already set up as an exploded WAR archive, then you can likely just select it and select “Add Web Project Capabilities…” from the MyEclipse menu. To find out how our projects work, I’d highly recommend that you read the Working with Web Project quickstart before you do anything. It’s available here: http://www.myeclipseide.com/images/tutorials/quickstarts/webprojects/
A second option is to create a new Web Project, using our wizards, then selecting “Add Struts Capabilities…” from the MyEclipse menu after creation. THat will give you an empty struts project, configured with all the correct libraries based on the version you’re using. You can then simply copy your development artifacts (Java, JSP, etc) into the appropriate location in the new project under the web root directory. As far as your build and deployment scripts, you shouldn’t need them anymore since our projects can do all of that automatically once you set them up.