Building a small Computer

[csm2008]

Hi everyone,
I am thinking of building a small computer, but I have only built large computers at this point. I want the size of the computer to be cereal box size or smaller. I want this to be very inexpensive, less than $500. I would like to run some form of Linux on it and be able to connect to a wireless network. Please give me advise on parts. Prefer newegg.com.
Just in case, do not include monitor, keyboard, mouse, or speakers

 

[arges86]

i'd start w/ a case like this.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129034

 

[gkay09]

How about this...

CASE -
Antec ISK 300-150 Black 0.8mm cold rolled steel Mini-ITX Desktop Computer Case 150W Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16811129080

CPU + Mobo -
i3 530 + ECS mini-itx H55
http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.495351

RAM -
http://www.newegg.com/Product/Product.aspx?Item=N82E16820146744
If you want 4GB, then get 2 of the above as it would be cheaper than buying in kit...

HDD -
Samsung F3 500GB
http://www.newegg.com/Product/Product.aspx?Item=N82E16822152181

DVD
http://www.newegg.com/Product/Product.aspx?Item=N82E16827106349

Total - ~$415