From the Lego website, an awesome process for designing and buying your own, custom, Lego set.
Is there something special missing in your LEGO collection? Would you like to add a professional touch to your personal gifts? Now you can make, shape & even order the toy you wish in a box you design yourself. Your ideas. Your creation. Your box – LEGO Design byME
Following are the steps you need to go through to make your own custom LEGO set:
- Install LEGO Digital Designer 3.0 for free to start your experience.
- Use your imagination and have fun as you build your own dream model
- Design your own unique box and get an auto-generated, printed building guide
- When you’re all done and satisfied, order your customized LEGO set.
The next steps are a quick description of our tasks:
- We will handpick your bricks.
- Produce your one of a kind box.
- For those that wish we’ll even include an Auto-Generated, printed Building Guide.
- When done we’ll ship your set right home to you, or the destination you have chosen.
http://designbyme.lego.com/en-us/FAQ/default.aspx
(via The Unofficial Apple Weblog, Build customized LEGO packs with LEGO Digital Designer)