Montero Sport computer???

I've been offered a 2000 Montero Sport but current owner is selling because computer doesn't work, and does not want to invest any more $$$.  I'm no expert on cars and have no idea how many does this model have.  All I was told is that suv does not start/run but windows and locks work ok.  Any suggestions?  Thanks.

The guy is probably talking abt powertrain control unit (pcm/ecu)  Its controls fuel, ingnition ect..., pretty much what makes the car run. 
 
See if the owner car get one just so you can get the car running.  I would be a little leary abt a bad ecu.