rml_perl and 802.1x peap

I am not sure if this is possible, i spent most of my day yesterday working on freeradius, openldap, cisco wlc 2500 and perl. My problem is we have databases that have passwords salted / hashed etc.. I can generate the pass by taking the users password and running some db functions and then challenge it but I would need to get the users password and direct it to a script. I was hoping the rml_perl could take my 802.1x peap and take the users pass and do something similar. I want to ask the mailing list here if there is a way to do what im trying to do? I did read that eap-ttls + pap passes a password but not sure how to direct the rml_perl to it. Any advice or suggestions would be great. Thanks, Scott