No I'm not using a router, connected direct.
what type of connection? dsl? (in which case you almost always have a router even if it is in the modem), cable (you well could have a router still), dialup (you dont unless the modem is on another pc)
Oh and Id suggest you use mirc 6.16 since thats the latest release, if an earlier version doesnt work. And if you say your scripts dont work with 6.16, well then i point the finger at your frezzes to the scripts you have.