Future proof? Well not really that possible unless you have a crystal ball, eh?
Money is key here. Whilst some may go for the latest and greatest, I would tread the path that is the middle road. More cash left over for flying too.
Don't go cheap and unbranded. All components here in should be branded but not paid through the nose for.
To go AMD XP something, you'll need a new motherboard. Probably need DDR memory. Typically a 1600+ will set you back around £130 presently. Not bad for the brains of the system. Intel will set you back much more. Just a small word of warning - make sure you set a temperature shutdown threshold in the BIOS. AMDs have poorer temp. protection than INtel. Other than that, as stable as any Intel IMO.
Stick a half-decent 3D card on. Nvidia Geforce 440 MX. Stable, reliable and readily available drivers. There's no denying any thing higher spec'd makes things pricey.
Now, you'll probably be okay with your original hard drive. Ditto your power supply. Stick it all together. If it doesn't compalin about power, leave it. If it does, well budget for a higher wattage unit and buy one.
BlueRobin
An experience and educationally qualified support bod dontchya know
