I am having the same problem as Homer with my DirectX 9.0c. I have it downloaded on my computer but it's not being recognized by my Sims 2 game. It still says I only have DirectX 9.0b. I have Windows Professional service pack 2. I would reinstall service pack 2 but is there an easy way to do it? ...Is it necessary to back up all my files if I do reinstall it?