I'm assuming that you are talkin about G3 tegs and i'm also assuming you are talking about power steering, alternator, and ac belts by the drive belts.

I haven't replaced the timing belt and water pump on my car so i'll just explain some tips to replacing all the auxiliary belts.

First, power steering belt is a piece of cake. all you have to do is remove the ps pump from the bracket. you don't have to disconnect the hose on ps pump. just put the ps pump aside and keep working.

you have to remove 2 bolts from the lower left engine mount to drop the engine a bit and give you a space to slip the lower part of the ac belt in. you'll know what i'm talking about once you start working on your car.

Now for the alternator belt, you might have to remove the alternator from its bracket completely or you might be able to put a new belt on by simply loosening the adjusting nut on the top of the alternator.

After putting all the belts, make sure you give them enough tension so that none of them will be slipping and making annoying squeeking sound.

Use the adjusting bolt next to the tensioner pully for the AC belt. Use the butterfly-shaped nut on the top of the PS pump for the PS belt. Now for the alternator belt,what i did is stuck a metal bar (I used a really long 3/8 extension) between the alternator and the bracket with the adjusting nut loosened and pulled the bar towards the engine to give it some leverage. While you are pulling the bar and tightening the belt, have someone else to tighten the adjusting bolt. Maybe there's a better way to do it but that's just what i did.

Make sure you tighten all the belts so that none of them have no more than 5-6mm of slack.

I know this is sort of confusing... eh i wish i could explain things better. Hope this helps.