As above, i have a 04 Sentra and am going to need to replace both the drive belts. I think the prices that i was given at the shops i usually go to are way too expensive (like $100) just to change the belts, so i'd like to do it myself. Anyone know pretty much needs to be done, as I'm a little in the dark when it comes to changing the belts, i think i've seen a nut on the Idle pulley, and the tension adjustment skrews, but that's about it. Any help is appreciated.