What to upgrade to play battlefield 3

[Wormy01]

Hello,

I have a standard Dell inspiron 540 computer not yet geared towards gaming, but I want to play battlefield 3. What I think I need to do is upgrade PSU, processor, ram, and graphics card. Am I missing anything?

My current specs:

Processor: Intel Core Duo E2160 / 2.2 GHz

Operating System: Windows 7 32bit

Mainboard: Chipset type Intel G33 Express

Ram: 2gb

Graphics: Integrated Intel graphics

Links to what I'm considering buying. Are these even compatible?

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

http://www.newegg.com/Product/Product.aspx?Item=N82E16819103871&cm_sp=DailyDeal-_-19-103-871-_-Product

http://www.newegg.com/Product/Product.aspx?Item=N82E16817339024

Thanks.

 

[Wormy01]

Whoops. I put up two psu's up there. One i was looking at is the last one. Also was looking at this graphics. Tell me if you find better deals.

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=41125&sku=E145-0550&cm_re=Homepage-_-Spot%2009-_-CatId_28_E145-0550