How do i reinstall itunes without losing all the data?

When i log on to itunes i get this message: The registry settings used by the itunes drivers for importing and burning cds and dvds are missing. This happens as a result of installing other cd burning software. Please reinstall itunes.
On my computer I keep my daughter’s cd collection (all 820 of them!) so you will understand i am very cautious about what to do next. Don’t want to lose everything. Be grateful for any advice