how do i set up new fan belt and tension pulley??

Serpentine belt?

I can only speak for an EF.

If so, there should be a sticker under your bonnet which shows how to feed the belt through all the pulleys.
The tensioner has a square hole in one of the pulleys which will fit a 3/8 socket wrench. Stick it in and turn it so the tensioner slackens and feed the belt over it once you've threaded the rest of the belt appropriately.

The tensioner is self adjusting so that's all you really need to do.

Also, you might want to check that the tensioner hasn't started to bend (the pulleys should be parallel to each other) as it can cause the belt to rub on the tensioner casing and give a really annoying noise and cause premature belt wear.

yer its an EF fairmont have to get a whole new pully and belt and yer wasnt sure how to get it all good again....... would you know where to get some good rims for my EF?

Not yet. I hope to be getting some in the New Year (after Xmas and Rego drain my bank account). Hopefully a 17" tyre and wheel package as I'm up for a pair of tyres as well.

I want the GT style rim as I reckon they were a lush wheel.