>My understanding is that hashing is one way encryption - like you would do with a password to store in a >database. When a login is attempted you would hash the attempted password and compare it with the hashed >value in the DB - that way passwords are not in plain text.

Yes that is correct. I happen to require 2 way encryption. Sorry for not being specific enough. However, the link you provided me also covers two way encryption. Its an extremely thorough article.

Thanks,
Dave.