Here is what you can get in reality.
GIGABYTE GA-H61M-DS2 LGA 1155 Intel H61 Micro ATX Intel Motherboardhttp://www.newegg.com/Product/Product.aspx?Item=N82E16813128527
Intel Pentium G620 Sandy Bridge 2.6GHz LGA 1155 65Whttp://www.newegg.com/Product/Product.aspx?Item=N82E16819116399
Mushkin Enhanced Essentials 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memoryhttp://www.newegg.com/Product/Product.aspx?Item=N82E16820146748
All ship for free.
This will be much/way faster than what you have now.
You will need to upgrade your graphics card but that can be done later.
But if you want to game even at medium on any newer games
Athlon 64 x2 Dual Core 4000+ Brisbane 2.10ghz this is gonna be an issue
I still have my X2 4200+ running with an 8800gt and it really chokes that card.