Php Login & Register Script?

[LLAMAvsCOW]

I have been wanting to add a membership where users can register an account and then login.
i was hoping for the most simplest way for people to register
but yet secure if possible:D , so if anyone can help i would really appreciate it.
and i dont mind links to other sites for help.

[tech_support]

Twey's PHP & MySQL Version: http://www.twey.co.uk?q=loginscript

CSV Login System: http://www.dynamicdrive.com/forums/showthread.php?t=15134