A Guide To VB 2008: Figure 1: Explore Schema Driven IntelliSense.
One cool feature in VB9 is schema-driven IntelliSense when working with XML axis properties. Simply add a schema to your project, and you'll automatically get the schema elements to appear in IntelliSense automatically. As you work further down the tree, the IntelliSense filters the elements shown to only those accessible from the current branch.