the sims copy disc

[avdragon]

need help. I have had the sims for years. got a new puter and tried to download the copy of game because the original disc is cracked. forgot what all the patches i downloaded were for and how to use them. searched this web site and am confused by all the info. can someone please give me instructions on how to load The Sims original game from a copy and then load the Livin' Large expantion pack to make it all work.
Thank you, Aina