Help with Encryption...

[eluser]drbigfresh[/eluser]
I am trying to help someone get some data out of a system that was designed using codeigniter. The originaly developer is long gone, and I am only somewhat familiar with codeigniter. For some reason the developer encrypted almost everything that went into the database, and I am now trying to decrypt one of the tables.
I know he was calling $this->load->library('encrypt'); and I have the encryption_key. My question is, how can I create a php page that will get all the info from my table (member_info) and display it unencrypted? Any help anyone can provide is greatly appreciated.

Thanks!