to be compatible with as many browsers as possible verify you're site with www.w3.org. Take into consideration of the following. - 800x600 is still being used by older audience who's eye sight will not allow them ot use higher resolutions. - You will have visitors who are color blind so some consideration for colors in your website layout should be considered as well. - Not everyone uses Internet Explorer which is why I recommend verifying your code with www.w3.org and try not to get too fansy with Plugins of any kind as they may not be compatible with all browsers. Or you can say the hell with all that and just do your site the way you want to, but the number of return visitors might not be as much.