Yes, it has been explained repeatedly. Try a search (there is a tutorial sticky in Infiniti General) and if you cant find it, post again. Must read previous posts.
Get the gasket, filter and one time use bolts from Joe.
Go to to distributor or Autozone type and get M1 ATF 3 cases = 18 qts.
Get a cooler (I recommend a B&M 70264) from Summit Racing or a speed shop. You can go to my board name under Member's Rides for pictures of some installations. Numerous other discussions on this topic alone.
Go to
http://www.bgfindashop.com/ and start calling to see if they still have the ATF exchange machine and get a feel for their experience. A personal visit is always part of my screening. Another alternative is to talk to a Snap-On jobber and see who has the Sun flush machine (this can extract replace your PS fluid also and thereby use the extra 4 qts. of M1 you pruchased above). Don't neglect your differential or brake fluid if you have not replaced them as the car will be on the rack anyway.
Have them drop the pan, clean the magnet and wipe the pan clean examining for any deposits or bits. Replace the screen filter. replace pan with one way bolts and new gasket. Perform fluid exchange. This assumes your fluid is still red. If brown or worse, may want to use some BG cleaner first, flush with conventional ATF, then do the pan filter procedure and flush with M1. Many use 6 0z. of Lubeguard red to get the ATF closer to Nissanmatic specifications.
You should time the BG machine as it uses the interal pump to transfer. It will tell you a lot about the condition of your transmission. The Sun machine has two translucent hoses that allow you to see the colors of the new vs. old fluid.
There is more, so happy searching!