How do I encrypt users' passwords before inserting it into the database? Is there a secure encryption/decryption method used by most that I can use. Once encrypted, how do I decrypt it just in case I need to email it to them? Any help would be very much appreciated.

www.aspin.com/home/components/security?qry=encrypt

Regards,
Brent

Which free ones do you recommend or are they not reliable? If so, which non-free ones should I consider? Thank you.