This is one of the easier things to do as far as car maintenance, if you can change your own oil you're probably competent enough to do a belt too.
Inspect or replace your belts every 60,000 miles so says the Manual.
At 95,000 miles realize you have factory belts and they're cracked, torn, frayed, and you could spare the 20$ to replace them.
There are 2 belts on the EJ25, one for the power steering and alternator, and a seperate one dedicated to the air conditioning. I decided to replace both because, why not? It may not be time, but its 10$ and I dont have to worry about it.
The belts, obviously.
: Park it, Pop the hood, disconnect the battery, marvel at your 2500CC engine and blah blah.
Undo the cover for the belts, it goes between 10mm and 12mm. Extension may be required here. I'd also like to add, the bolt that holds the cover on, do not remove all the way, as it also holds the alternator in place and there is a small bracket it attaches to at the back of the alternator, that is held in place only with that bolt.
12mm Bolt to Undo the alternator, which acts as a tensioner on the first belt. Its on the left side of the alternator and you can see a long bolt and where the alternator can move. When you're done undoing it you should be able to simply slide the belt off. I only had to undo the alternator about 2/3rds of the way down its path to remove the belt.
Second belt time! Still using the 12, look down on the belt and you'll see the tensioner pulley. Loosen that, but don't remove it, Then switch to the bolt that pulls the pulley up on the slide. Make sure it is loose before undoing the long bolt, otherwise you could snap it. Simply undo it all the way, and you should be able to remove the AC belt.
Put the new belt on, it should slide over. Slide it over the tensioner last. Tighten the tensioner pulley to roughly where it was, you want it tight enough to where it doesn't slip but not so tight that it is putting stress on the system. I go by the grime on the threads of the bolt, then adjust from there. The belt shouldn't be able to deflect more than half an inch or so.
(pic is labelled to help identify parts.)
Do the same thing with the Alternator pulley, put the belt over the alt last, and tighten her up.
: Put everything back together, inspect the belts to make sure they're all lined up. Turn on the engine, make sure the belts don't screech and they turn nicely. Make sure to check the power steering by rotating the steering wheel on a lock to lock, and cycling the A/C compressor.
Enjoy your new belts and peace of mind!
This process is also very similar on every car I've ever seen. Some have different methods of tensioning the belt, but its all pretty straight forward if you look at it. Don't tell your family that you did this, they'll swindle you into doing it instead of their mechanic and then they won't pay you.