Rails - Mar 2006 - Extend user table/create new table, best practice?

Hello,
 I am new to arena of web development and am using the user engine.

I want to store few more details about the user, so should I extend the user
table provided by the user engine and add columns to it, or should I create a
new table. 

I would like to know the best practice in this regard, and opinions of other
web developers.

Thanks.
-- 
Surendra Singhi
http://ssinghi.kreeti.com, http://www.kreeti.com
Read the latest news at: http://news.kreeti.com
,----
| Great wits are sure to madness near allied,
| And thin partitions do their bounds divide.
| 
|     (John Dryden, Absalom and Achitophel, 1681)
`----