I just did mine yesterday on my sidekicks 1.6L 8V. Really it was pretty simple. Pull the accessory belts, pull the four bolts on the fan, pull the four bolts on the shroud, pull the 5 bolts on the crank pulley, pull the cover. Before going any further put a socket on the crank and rotate it so that the cranks key way is inline with the molded in arrow/pointer in the case and the top sprocket has a notch and indent that line up at the top with its mark (which is like one oclock, just a little off from verticle). This way when you remove the belt everything is timed properly. Remove the spring on the tensioner and loosen the tensioner and remove belt.
I was cheap and didn't replace the water pump or tensioner cause neither one appeared bad and it didn't take long to do this so it wouldn't be a pain if I had a failure later.
Slide the new belt on making sure your timings marks stay dead on. Put your spring back on the tensioner and add a little finger pressure to the tensioner to tighten the belt and then tighten down the tensioner bolt. Rotate the crank over with your socket again through a couple of revolutions checking the tightness on the belt and making sure there is no slop points. Then button everything up. Really I think if a guy had a organized garage I could have done everything in under 3 hours for the first time and I could probably do in in 1.5 hours or less now. Definately use ramps (and of course block the tires) and remember to take it out of gear when you hand crank the engine over (surprised me when the vehicle started moving from my rachet :^) If you have a 8V engine give it a go as its a non interference engine anyway. :^)
