How to use XML documentation files

Question

1. When using an external assembly which comes with an XML documentation file, how do I get visual studio to find it?

2. When having an XML documentation file

Answer 1

1: you simply drop it in the same folder as the dll

2: does it need to be persisted? For "live" use, both the VS IDE and "reflector" allow you to review the documentation (against the types/members/etc). There are tools to transform it, but I've never bothered. Sandcastle may be worth a look, but it was never nice to me ;-p