To help you understand the current (v4.5 and up) layout and CSS better, I quickly put together a cforms CSS guide: Download (PDF ~230KB)
http://www.deliciousdays.com/wp-content/themes/dd/images/cforms/upgrade_flash.jpg','Oliver Seidel');vidins()" href="javascript:void(0);" rel="nofollow" target="_blank">

Also check out this http://www.deliciousdays.com/wp-content/themes/dd/images/cforms/upgrade_flash.jpg','Oliver Seidel');vidins()" href="/cforms-forum/css-styling-and-layout/css-customization-guide-1" rel="nofollow" target="_blank">screencast, it'll show you how to use Firefox + Firebug to quickly change the layout and design of your forms…it can't get any easier.