2006 Nissan Altima

2006 Nissan Altima 4 cyl Two Wheel Drive Automatic

2 things. I have changed the oil filter before but now I can't find it even though I know about where it is. There was a plastic cover on the bottom that wasn't on and now that I put it back on I can't find or feel it. Any ideas? Also, can you please tell where the fuel filter is located. I tried to purchase a book today so I wouldn't bother you with such minor stuff but the store was out of stock. Thanks so much for your help.

SJ

PS - on my next question I will donate again but my wallet is out in the car.