I know that I'm not really answering your question, but if you want to view IE-only sites, I would really recommend this:
It's a firefox add-on that lets you selectively tell web sites that you are running IE, even when you're not. I've never seen a modern page which actually couldn't render on Firefox, the site just blocks you based on the user agent.
I'm not sure what the default browser on PCLOS is, but Konqueror has the same thing built in, but slightly less convenient. It's just Tools->Change Browser Identification.
I have installed various IEs4Linux before, and I can promise that you'll have fewer headaches in the long run if you just tell your browser to "lie".