Really disable XML Schema Explorer

The first time you open up an XML file in a Visual Studio 2008 SP1 instance, it opens up XML schema explorer. I want to disable it. Is this possible?

Background: I'm developing within a VMware environment (yes, I agree, that is the real problem here). XML Schema Explorer uses graphics acceleration, and this messes up the VM (it drops out of full-screen mode, flashes, and sometimes freezes). I could disable the gra开发者_运维知识库phics acceleration in the VM, but that would stop me sharing the cursor with the host machine, and I'd rather retain that.

Microsoft has two separate threads, both answered, at least in part:

How do I turn off XML Schema Explorer?
How can I keep XML Schema Explorer from opening by default?

hopefully one of the two above will solve your issue.