ok click start menu then click all programs then accessories and then msdos ...... at that prompt letter type netstat ..... it will list all of your connections ........ then if u are using windowx xp u could press control alt and delete at the same time ONE TIME only
click the processes tab and close down any mirc process ....... then uninstall the program and restart ur pc
repeat process till u have deleted any mirc from ur pc that is active and tryin to run
...... altho u will have to run another virus scan after this to ensure u dont have more infected files ...... not to mention u will need to remove the start as service from the registry on the/those infected mircs