IE, Alpha Transparency and Print Stylesheets

As may be obvious, I've been playing around with a theme for b2evo in the last few days. I've got it to a point where I was mostly satisfied with how it looked in Firefox, Opera, Konqueror and IE. However, I am using the AlphaImageLoader to make the PNGs display properly in IE and what I hadn't taken into account was that the IE stylesheet applies in print mode too - so the images I'm filtering out in the print stylesheet for the other browsers are showing up in the print view for IE because of the DX filter. The fix is easy enough, and obvious if I'd thought of it, make the IE stylesheet apply to media type screen only:

<!--[if lte IE 6]>
<link href="/style/ie.css" rel="stylesheet" type="text/css" media="screen" />