mysql as a service and root password (-w w)

[W I L L]

I have a few qeustions for some linux/mysql pros in here.

Background: I've just built MySQL on Mandrake Linux 9.1 from source.
I can get the mysql service running my:
shell> /usr/local/mysql/bin/mysqld_safe --user=mysql &

but I don't know how to keep it running, or how to make it start at
every bootup. How do I do that?

Also, I've made an alias to mysql:
alias=/usr/local/mysql/bin/mysql

but it won't span sessions, I think I need to export it, but I'm not
sure how to.

Also, via mysqladmin I set the root password to "password" which I
don't want to keep :) how do I got about changeing it now?

Thanks so much for your help. I know I probably should have installed
via RPM, but I'm wanting to learn as much as I can about all of this.

Thanks

-w w