OK gentlemen, first of all, the compliments of the season to you. Next.....after weighing up the costs and pros v cons, I found a supplier who was offering refurbished Dell units with Windows 7 and a much much higher spec than my desktop which will also accommodate Win 8. The price was not a great amount over the cost of purchasing a new O/S and so I went for that. The laptop is newer so I shall get an upgrade disc. Many thanks once again for all your help. Reg John F.