Your fuel filter should be located in the rear passenger wheel well area. It is almost directly behind the right drive axle. Looks like a silver cylinder held in place by a metal band. You may want to get some new fuel injection hose in case your's is dried and cracked. Mine started leaking after replacing the filter so I changed every piece of hose in the system. HTH
P.S.: Take a look at http://www.realoem.com for part diagrams.