I have installed D7 with Zen theme.

I have created sub-theme from Zen theme.

I tried to solve this issue using http://www.johnpezzetti.com/2009/02/15/zen-theme-breaking-ie-internet-ex...http://www.johnpezzetti.com/2009/02/15/zen-theme-breaking-ie-internet-explorer-css-its-not-your-modulessolution. I have enabled the Css aggregation also. still it is not applying any css on IE8 browser..

Please let me know any more setting we need to do here.

thanks in advance.