Oh, just one thing - to get the free trial you have to give them your credit card number. You must make sure that you cancel the free trial BEFORE the 14 days trial is finished, otherwise they will charge the annual fee to your card. Let us know how you get on.
Oh, and another thing - depending on which country your research is and where you live, you may like to consider a trial of Ancestry.co.uk (for UK based research) or Ancestry.com.au (for Australia based reserach). Ancestry.com has a US slant.