what sizes sockets do i need to change out my alternator on a 94 se. And what are the steps? thanx in advance

15mm, 13mm and I think a 8mm.

Safety FIRST!
Disconnect both battery cables.
Using a 8mm, disconnect battery charging cable from the alternator. Its the thick one.
Disconnect the alternator wire(small one. Just click it out)
Using a 15mm socket, place it on the nut on the pulley just to the left of the alternator, now turn it counter-clockwise to remove tension from the belt, slide belt off, and remove socket from pulley.

Using 13mm, remove 2 bolts securing the alternator and it should pop right out.

Installation is in reverse.