MAGTER

HI THIS IS MY FIRST TIME USE THIS FORUM. SOMEHOW MY COMPUTER WON'T OPEN MSCONFIG, REGEDIT,HIJACKTHIS,AD-AWARE,SPYBOT..... WHEN I TRY TO OPEN THE PROGRAM, IT WILL HAS A WINDOW POP UP ASK ME WHICH PROGRAM I WOULD LIKE TO USE TO OPEN THE PROGRAM I WANT RTO OPEN. I DON'T KNOW HOW TO DO. CAN SOMEONE HELP ME? PLEASE THANK YOU