Go to ca.pcpartpicker.com/list/ to get an advanced custom PC; all you need is what's shown in the image.
It should look like this when you're finished, but with different components.
After you've completed the previous step, press this button to copy the text, then email it to mycustompc2@gmail.com with the subject line "My custom pc, I'd want you guys to construct me a pc, below is a list of my parts '<the text you copied here>.".
After you've completed these steps, you should receive an e-mail with an estimate of how much the computer will cost and how long it will take to get it. If you accept, please send us an email with your payment method. We will begin creating your custom PC once we receive your money.