I get the same message "Error: authentication failure (0x1233). When I went into the Network settings, under details, the connection type is "PPP", Idle timeout is "Power Off" Query DNS is checked and IP address Automatic is checked. Is this correct? If I change it from "PPP" to "SLIP" or "CSLIP" it connects fine untill I try to send the message then is gives me an error "Could not open connectionto Sprint server. Hostname Lookup Failed" Any Ideas of what to change?