I know that it is by the oil filter and I remember reading that you have to be under the car but I am lost as can be. Can you reach them/see it from the top (looking down?) I see 2 senders right next to the filter on the side by the firewall but they do not look connected to the same piece. Please help, I am retarded

Not retarded at all. It is on the back side of the oil filter bracket near the bottom of it. The two switches you are referring to are the water temp sensors.

So here is the easiest way for me to tell you where it is. Jack the car up and support it with jackstands :D .

Lay under the car with your feet facing the front of the car. Look straight up on top of the power steering pump and you will see the oil pressure switch. It is the only electrical connector in that area, but it is way up it there. And it will most likely be covered with oil if it has never been replaced before. Common problem with the SR20's and oil leaks.

I do not know if these pictures will help, but check out my write up on my site when I overtightened the oil pressure switch. :rolleyes:

http://nismopc.tripod.com/oil_switch.htm

Actually I have been installing my turbo kit for the past 3 days and I finally found my oil pressure sender after removing the wrong part(as mentioned above). I found it by this method. If you look under the car look for the starter once you find that, look almost directly across from it toward the passenger side its right there. Looks like a very large nut with a removable plug adapter on the end.