Help with iso files ;)

i recently bought the sims 2 deluxe from wal mart and had it working for about two weeks before my computer scratched it and i tried reinstalling it but it just goes to 97%. i lost the receit so i cant return it. so i decided to try iso files. but i cant get it to autorun with daemon tools. ive done it before but it took me a long time to figure out how. when i go to “my computer” it just says open. how do i get the file to run? please help i will bow down to you haha:bow: