Internet explorer 6 - CSS

[Sofia]

Hello all.

Is there a way to have a template conditional for Internet Explorer 6 ?

I find this in the headinclude template:

<if condition="is_browser('opera') AND !is_browser('opera', '8.0.1')">
<style type="text/css" id="vbulletin_opera8fix_css">
ul, ol { padding-$stylevar[left]:20px; }
</style>

I want to use CSS but with IE6, these CSS class don't work.
I want to include in my headinclude template special css class to use with IE6 (like above for opera 8).

Thanks!