I've recently bought The Sims 2 PC DVD-ROM. I inserted the DVD in the drive and tried opening it from the G: drive. It gives me 3 options: 1. Sims Colelction 2. The Sims : Superstar 3. The Sims 2. I clicked on 'Sims Collection' and installed the game. After that when I try to play the game from the shortcut created on desktop it gives me an error saying 'It has come to our attention that you have installed another Sims expansion pack after the Sims Vacation. For this to work properly, the The Sims Vacation installer will now update your nstallation. Select OK to proceed.' When I click on 'OK' nothing happens. Please help. This is the first time I'm trying to play a game on my PC. I'm using windows XP. Please help.