How do I replace an EGR valve on a 2001 Buick Century?

I need to replace it but I don't want to pay $100 for someone else to do it.How do I replace an EGR valve on a 2001 Buick Century?Disconnect the electrical connector at the valve. Remove the 2 or 3 bolts securing the valve. Remove the gasket and clean the sealing surface where the gasket sits. Install a new gasket and reattach the new valve. Make sure that both the valve and the gasket are installed exactly in the same position as they were before removal.