I hate that crap, well to get it off as your start webpage go to tools in internet explorer the internet options, homepage tab is at the top to tweak. Ok next to get rid of it go to your start button and go to run. In the run box type in msconfig. Then go to startup and you can check or uncheck the stuff that starts up on your computer. (most likely xupiter is in there) then press ok and restart. If that doesnt work leme know, I hate this! Oh also check out
Ad-Aware ,its cool and removes all of that stuff other programs install you dont want for ad's ect. Good luck!