Why doesn't my sims 2 delux or spore work on my computer?

i bought both of them but they won't download to my computer~

i have a regular computer with the internet (not a mac)

and my computer doesn't recognize them in the disc drive but other CD's work that aren't from EA.........HELPWhy doesn't my sims 2 delux or spore work on my computer?
i think spore and sims deluxe are dvd-roms and your computer only takes cd-rom so i think thts why its not working

towing

peterbilt