Attempting to upgrade need advice.

[Deleted]

Hello there i want to upgrade this desktop pc in a few days so i will be able to play diablo3 on medium to high settings.the question is CAN i upgrade it?
Would the motherboard fit inside a decent sized pc case? because the pc case is too small to fit in a graphics card and a bigger power supply.
I also checked the motherboard if it got the connecter for a power supply and it has.
If so my shopping card consists of 1x Pc case,1x power supply *pref 650w or higher, and a good graphics card.
I am asking this stuff as im not really *good at hardware*.

Any help and suggestions would be highly appreciated.


Here is the pc specs
Acer aspire x3200
Processor: AMD Phenom 8550 3 x Triple Core 2.20GHz
Memory: 3GB RAM(Installed)
Operating System: Windows Vista Home Premium
Hard Drive: 640GB HDD SATA
Optical Drive: DVD+/-RW
Graphics Card: nVidia GeForce 9200 256MB
Power Supply: 220 W power supply, PC 2001 system compliant
FCC, CE, BSMI, CCC, VCCI, CB, Bauart, MET certified
I/O expansion PCI Express® 2.0 x16 slot

[chaud]

I am guessing it uses an mATX motherboard, so it should fit in any case which has mounting holes for it (most do). You should find out the motherboard model with something like hwinfo before you pick out parts for it.