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.

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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.