well sounds like you need a receiver pack,(5cell battery pack) to go in the battery box and a reaciver pack charger. make sure you have a glow ignighter and a charger for it and that its charged. if you have a local habby shop near bye you may whant to go there and get some help from them so you can see what they are telling you to do. you will need help getting into nitro rc. and it really helps to have some mechanical skills to. you may whant to try buying a dvd on nitro rc like a traxxos tuning vidio. the cen matrix you bought is a nice car. i warn you be VRRY patiencent getting into niro rc can and will be a headace at first. its a learning curve on engine tuning and truoble shooting and probley throwing the buggy across the room a couple times and so forth in abouth 3-5 months you should be well set and have a good head on youre shoulders and having lots of fun.