I am just now opening my site and I am creating a starter design, and I was wondering how compatible CSS is with other browsers and in general how well it would be to make my whole site in CSS?

This will tell you what browsers etc support css (style sheets)
http://hotwired.lycos.com/webmonkey/reference/browser_chart/

Try going to A List Apart (http://www.alistapart.com/stories/practicalcss/) and Little Boxes (http://www.thenoodleincident.com/tutorials/box_lesson/boxes.html).

thx bunches starlet and Alcy! The tutorials on boxes helped loads, and I liked knowing who would be able to view my site. now if I only I could get my dumb ip logging script to work...