I would like to build a decent system in my spare time (not top of the line) for my kids, without breaking the bank. Have never done it before, only installed vid cards and memory. Would an AMD system be cheaper overall? What mobo is beginner-friendly and is building a pc just basically plugging everything in if you have a mobo? Don't care if it has onboard sound, but I would like an AGP port. Or should I just buy a barebones system and add the components I need? Any suggestions would be appreciated.