MSN Explorer

Can anyone help me? My daughter use to have MSN Explorer on her old computer,
but when we bought her a new and tried to down load msn explorer, it says we
have to pay monthly. Yet we got it free when we first put it on all our
computers. I’ve still have it on mine and also my son which was my daughters
old computer, it had to have a new hard drive put in because the old one
crashed (At PC World clinic they reinstalled Windows XP Home and MSN Eplorer
still works) hence the reason my daughter got the new one. Like I said MSN
Explorer works ok on mine and my sons, why is it that we have to pay for the
new version even though my daughter has an account already with them. I’m
baffled please say you can help.
Many thanks
Paddy