Just make sure you take it to someone who knows what there doing and doesn't claim to only because your paying them to do it.

If I were you I would go ahead and replace the belts to. Also and seals like the crank seal, cam seal or seals, tube seals, etc. . If you want. I would. Then you know that your shit is going to not leak(now) or in the future. If its never been done before on that car and with it being a 00 si I would go ahead and replace them if your going to do a timing belt i mean it is six years old.