WIN Mesenger

I think I had enough of this messenger,,I have a brand
new computer at 2.0 gig cpu and for the last year this
messenger just eats all my resources even when I shut it
down,,,no matter what i do this thing pop's up,,,I been
messin with it for two years and I'm ready to go back to
win 98 cause of it,,,what a shame...somthin i don't need
i gota have....jeeezz,,,,how can I buy a computer that
works???