I know this is an old thread, and i apologize...but I found a relevant video with step by step for this exact repair. I believe my 03 is doing the same exact thing, as I have little puddles from time to time on the ground, and it looks like someone lathered up the undercarraiage like a thanksgiving turkey before sticking it in the oven.
Toyota 2UZ-FE Engine Oil Filter Adapter Seal Replacement - YouTube