Help with uninstalling microsoft security essentials – won’t work thru control panel either

I need someone's help, I'm unable to uninstall microsoft security essentials!  I'm unable to go under the control panel either.  Everytime I click on uninstall it acts like it's uninstalling but then I get an error code stating that I have to download a filter manager rollup package?????  What is this??  I had a chance to click the site, but it won't let me download it.  How am I to get the microsoft security essentials off my computer if I can't get any farther than that??  I was able to download norton, but now that won't run because of the others, HELP!