There is a tutorial on how to change the timing belt in the DIY sticky above. You can put the cas back in the same position but if the old worn belt is replaced by a new one the timing could be a bit out anyway.
Is there any marking on the cam cover to say that the belt has been done? If it was done at 85,000 they are good for at least 100 - 120,000. I can't tell by looking at a belt if it needs replacing - maybe someone who does a lot of them could. You could always pull the cam belt cover off and see if you can find a non factory brand name but if they have replaced it with a factory item that won't help!