Its definetly your motor belt.  Any mechanic can do it quick if you dont
think you can.  BTW its super simple, there should be a belt diagram on
the radiator support.  All you do is loosen the tensioner and take the
old one off.  THen follow diagram to re-install the new one.  Tighten
tensioner when done.

Have you had a little work done recently that involved removing the belts?

Your symptom (little squeal at startup, then quickly goes away) is
consistent with a loose power steering belt or alternator belt, but could be
other things. I would check the belts first. Quite possibly all that is
necessary is to tighten one of them.

www.autozone.com has a free online manual for your car that gives directions
on guesstimating belt tension.

Do you have air conditioning.  If so I would suspect the compressor
clutch.  LOOSEN not tighten the belt and see if it helps.

quick is fix is spray a tiny amount of wd-40 type lube on belt.....it
is not recommended but it works.  When I say it is not recommending, I
used to work in an auto shop....we wouldnt do that to customers cars
because it can lead to belt slipage however, when any of the mechinacs
had a squaeel they would throug oil on it