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 S.
http://ssinghi.kreeti.com, http://www.kreeti.com
Read the latest news at: http://news.kreeti.com
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