Explain me all the instll. step by step i have the sims 2 downloaded with 4 CD-s divided.when the installation begins i play memory minigame. at 23 percent ask me for CD 2 how i can insert it

take disk 1 out and put disk 2 in the same way u put disk 1 in. Also for absolutely no problems u should leave any "ok" message and let the installer detect the disk automatically