There is this small script parsing css and fixing some rules :
http://github.com/weepy/cssie
Plugin for jQuery providing native support for missing CSS in IE.
Currently provides:
* E > F (direct descendant)
* :hover (normally only available to a tags)
* E + F (sibling)
* [rel=attr] (attribute selection)
* :first-child and any other selectors containing : and supported by
jQuery
* :focus
* .classA.classB (multiple class)
Regards,
O