Determining what to parts in my first computer to upgrade

[mattangle]

I built this as my first gaming computer not too long ago, but I feel like its time to upgrade some of the parts. I am still learning so I could really use some advice on what needs to be upgraded and what doesn't. I use it for pretty basic gaming, WoW, LoL, CSS and BF, nothing really intense. However I am using a 24' monitor and I am about to get a second 24' monitor, I would like to be able to play games on one monitor and keep a web browser or whatever open on another. So two monitors with great resolution and no lag is my goal, ill list my build below, if anyone could point out or suggest changes I could or need to make this happen I would really appreciate it, remember this is my first build and just learned it all myself as I went so I am sure its not the best, but its the best I could do learning on my own from no experience.

Case- 334 Coolermaster Elite Nvidia.

Power Supply- APEVIA ICEBERG ATX-IB680W-GN 680W ATX12V / EPS12V SLI Ready Power Supply With 3-Color LED Lights.

Motherboard- GIGABYTE GA-970A-UD3 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard.

Processor- AMD FX-4100 Zambezi 3.6GHz (3.8GHz Turbo) Socket AM3+ 95W Quad-Core Desktop Processor FD4100WMGUSBX.

Graphics Card- GIGABYTE GV-N26UD-896M REV2.0 GeForce GTX 260 896MB 448-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card.

RAM- G.SKILL Ripjaws Series 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9Q-16GBRL.

Hard Drive- I don't have its specs handy, but its a 1 TB HD.

I am not sure what I need to upgrade to make my goals happen, any suggestions and or opinions would be great. Thanks in advance to anyone who helps!

-Matt

 

[mattangle]

I thought my cpu was up to par, bummer that its not consider I just bought it semi recently for this thinking it would be sufficient. Any recommendations on new cpus?