Hi, WE have developed an OTP (one Time Password) mechanism. Now, we want to customize the Logon.asp to access our own DLL that will check the OTP (instead of a fixed password) and return "success" or "failed" and the ASP should open the OWA (or not) accordingly. We are looking for a sample code, or references - how to do it. We'd appreciate your support. Cheers, Arnnei PS - Please contact me at: arnnei@xxxxxxxxxxxx