I keep a VM with windows on it. Unfortunately you have to purchase a license. Hopefully I'll be able to upgrade it like they've allowed since ~Vista. But now anyone tracking user agents knows I'm not using Microsoft. I didn't even put a browser on the VM. I have used the VM under 10 times over the past year and that's usually just to use Quick Assist to help others with their Microslop OS. Sometimes to deal with a particularly obnoxious excel file.