Thanks again! I shall consider doing this in the coming two weeks or so; and I am still 50/50 about doing it myself or hiring a 'professional' to do it.
P.S. I expect to keep this car until it becomes a "clunker" - which I hope is not very soon.
2002 Sentra GXE in Molten Silver; 1.8L, 5-speed, Synergy Package. In 2012, it was repainted, had new struts installed, new head gasket, new water pump, new spark plugs, new sensors, and new belts & hoses. 160,000+ "original owner" miles.