as far as the fix goes it's easy, if you have 4WD there will be some disassembly required to get to the oil pan. as for a gasket, do not buy one Toyota uses oil pan sealant called FIPG can get it at the dealer for $20 or so. Or you could get the permatex ultra black, which also works very well. most important thing about using liquid gasket is clean oil free surfaces, be sure to get all old material and oil off completely, apply liquid gasket evenly not using fingers to spread it(oils in your hands will affect sealing), allow the sealant to sit for about 2 minutes before installing pan back onto engine(the surface of the sealant will be slightly tacky). overall the most time consuming part is cleaning your gasket mating surfaces, the rest is just removal and re installing.