Nata$

Last night on the way home I kinda of got on the gas and I smelled burning oil. At home I noticed a line of oil drops from my driveway into the garage. I looked under the motor and seen oil from between the oil pan and the lower part of the tranny. I think it's probably the rear main seal. Does anyone have and hints for changing it out? i know you have to remove the tranny but is there a tool to remove the seal and to put the new one in? Thanks