MMC Will Not Run Version Of IE Earlier Than 5.5

My problem is that when i try to use device manager it tells me mmc cannot run a version of internet explorer earlier than 5.5 and i have internet explorer 7. One thing is that we dont use interent explorer any more we use american online but we still have internet explorer. We got rid of it when we stopped wanting to pay for it. And if i try to hook up the modem for this the dsl light keeps flashing red and everything else is green i dont know why it is red i set up everything. i used the splitter and powered the modem and put the ethernet cord into the back of my xbox and then used the spiltter for the phone line thing and connected the phone line to the back of the computer to the phone thing on the splitter and then used the dsl cord to the back of the modem and on to the splitter.