<$200 Motherboard/CPU options

For my birthday, I received about $200 to spend on whatever I so choose. So I figured I'd throw a new CPU and motherboard in it (it's in dire need of an upgrade   )

These are my current specs:

- AMD Athlon 64 X2 6000+, Dual-core, 3.0GHz
- ECS Nettle2 Motherboard (OEM motherboard for the HP Pavilion Media Center m8226x)
- 3GB of DDR2 RAM, clocked at 667MHz
- Visiontek Radeon HD 6770 (overclocked)
- 500GB Sata II HDD, 5400RPM
- Windows 7 Pro (64-bit)

I want to get as much as possible, for under $200. I won't be getting money for a long time after this. (I don't have a job   )

I was thinking of getting either the AMD FX-4100, or the Phenom II 965 Black Edition; 4GB of DDR3 RAM, clocked at 1333MHz (just for the time being); and for a motherboard, I picked either the Foxconn A88GMX (for the Phenom II), or the MSI 760GM-E51 (for the FX-4100)

I would much prefer to get these parts before school starts up again (August 28th for me)

Thank you for taking the time to read this, any help or suggestions would be greatly appreciated!  

- Andrew