Change of root password

[Parminder Singh Chauhan]

After long struggle I (A newbee to linux) was able to setup mysql4.0.16
and I don't know what I have done, I set the root password which I don't
know. Now I can't access the mysql. 
Is there anyway of changing root password.? and how?
I tried to delete the content of /usr/local/mysql/var/mysql and run
mysql_install_db again thinking it will remove the password but no
effect.
-- 
Parminder Singh Chauhan <[EMAIL PROTECTED]>