Hi, i just bought vB and trying to create a theme. It's something new to me. So please bare with me.

How do i edit this border's color and make it rounded like the following etc...
I tried to search for ans on this link but couldn't. Any kind hearted can help me?
http://www.vbulletin.com/docs/html/main/stylesintro
--------------- Added [DATE]1223055429[/DATE] at [TIME]1223055429[/TIME] ---------------
anyone can help?
Thanks in advance