Need to create branches

Hi,

We don't see the needs to create branches for our projects. But
recently, this foresight has fallen short. One of my project needs to
create branches. How can I do this? Let say a project name Sumo. A
svn repository was created for Sumo as in /svn/Sumo.

Subdirectory Trunk and Branches were not created initially. So, the
directory structure such as:

/svn/Sumo/---+Trunk
                          |
                          +Branches

as in the tutorial was not there. How can I create a branch for Sumo
repository with directory structure of /svn/Sumo only?

Thanks.

--
"If you missed the rising sun and the morning dew, don't miss the  
beautiful sunset." -- Adrian Hoe inspired by Michal Nowak, June 15 2004
http://adrianhoe.com