Just to give a little background here. I haven't used Windows as a personal desktop, or even for work in about four years now. However, as a developer of web-based applications, I need to test things under Internet Explorer. Or more commonly referred to as Internet Exploder where I tend to lurk on the internet.
On a side note: If any IE devs, who previously promised to get back to me on POST not working with OpenSearch...please respond. It's still broken, and thusly IE is very much earning it's Internet Exploder title.
I've played with various WINE setups. Tried Win4Lin, VMWare, etc. Bottom line is though, I have no desire to use Windows at all.
A few months ago I started using an install script for Linux called IEs4Linux. It is a beautifully written script that allows for automated installation of IE5, IE5.5, IE6 and IE7! This uses WINE, in an effective manner. Automagically downloads and configures each installation and drops a nice usable shortcut on your desktop.
Now I'm sure they don't like this much over in Redmond, but it allows me to do my development work and make sure stuff renders correctly through their bastardized implementation of W3C standards.
You can download this incredible script from http://www.tatanka.com.br