Choose the dial-up connection which VPOP3 should use here, and enter the username & password to connect to your ISP using that connection.
Note that, because VPOP3 is running as a service, it can only see dial-up accounts which have been configured to be usable by anyone on the VPOP3 PC (not "shared", because that uses the Internet Connection Sharing service, which is different). See the Creating a Dial-Up connection for VPOP3 topic for more information.
