03 Diamante...Scheduled Maintenance???

My wife's 03 diamante is at 59,999 mi. and I wanted to know what kind of maintenance it needed and when (timeing belt etc...).

Also, the service engine soon light just appeared. Will get back as soon as I get to autozone (thanks everyone for that tip).

Where should I get it serviced, the dealership, pep boys, or ????

Thanks in advance for everyones help,

Gabe in SA, TX

well i believe at the dealership they have a 60,000 mile maintenence which includes everything that shoiuld be done. I dont remember all the stuff. But i do know that timing belt is the most important