I need a little help PLEASE..My wifes P.C. died and we have now got a Dell laptop running vista (which I don't like ) and would rather use windows X.P.Pro.which she is familiar with..Question do I need to remove Vista before loading X.P.pro ??? and can I use the disk that I have for the dead pc or should I buy a new disk we are both in our 80s and not very interested in learning a new O.S.Thanks for any advice you can offer,regards Bob Champion