ffs heidi!!! it all depends on how good you are at spannering, and what yer knowledge of injuns is. if you int done nowt more complicated than brake pads and spark plugs you might wanna get it done by someone else, or you might think its time to get a good workshop manwell and get stuck in. am sure if you hit any problems theres folk on here that can put you right.
it dint require much brain power just a basic understanding of what yer trying to acheive..
if you do decide to tackle it yer self ask on here fer some relevant pointers on how to go about it