the factory controls are for a factory volvo (or oem equivalent) changer. There maybe an adapter out there (blitzsafe is a major brand http://www.blitzsafe.com/) that will adapt an aftermarket brand changer to the factory deck. otherwise your option is an RF CD changer that plays through a preset radio station. as far as you doin it yourself, that all depends on how you feel about pulling panels and running wire in your car. granted the panels in that car come off with little effort (i own a 98 s70 t5 and have installed stereo's for best buy for the better part of 2 years, so it's natural to me) you may want to just save yourself some hassle and have a shop install it and get a warranty on the install. just my 2 cents. good luck!