if you rleak is an axel shaft seal its an ok job just kinda a pain to get the axel out u need to taka alot of things apart to get it out. if its the drive shaft it should be even easier u just will need socket big enought to get your driveshaft mounting flage off to get to the seal. if you are new to this prob i would just take it to a shop. if u dont get the seal in there right u will have the problem again. but if u can show us a pic of the problem area we could steer you in the right direction faster