Battery?

[jerkinjohn]

O.k. my battery is dead as of this morning. Yesterday my X struggled a bit startin but today nothin at all so I jumped it and it started right up. Once I get it started it will be good for the rest of the day but now with winter here I will be S.O.L. in the morning! So I want to replace the battery but good luck finding the damn thing! Jezz Us could they make it anymore difficult? My dealership says in in the passenger side rear wheel well? I can't find it? Please Help ( I own a 2002 4.4l X-5 with an S-2 Dinan package on it rollin on 20"s! Love it and have owned it for over three years now with all kinds of problems but I am a die hard X-fiver ;o)