it usualy wen u click a link thats "irc://irc blah blah blah" it goes to mirc.but installed soemthing and it changed the default program to open the link instead of the default mirc, how do u get it to go back to default mirc?
Try going to File > Options... Alt + O > IRC > Catcher. Now check the two check boxes at the bottom "Enable support for chat links" and "Confirm chat link requests".