Step 1, first you need to buy a Nintendo DS Top Toy, by far the best place to purchase these are Deal Extreme, not only are they the cheapest by a long way but they also offer FREE Worldwide shipping (which usually takes around 7 days)

Click Here to buy For $6.71 (About £4 including Free Worldwide Shipping)

Step 2, To be able to use your Nintendo DS Top Toy you will need to buy a memory card for it as it doesn't come with one, we suggest a 2GB Micro SD, see below:

This Micro SD will allow you to have around 40 DS games on the Top Toy at any one time, here is the cheapest available online from Play.com for just £4.99 delivered so for about £14.50 (depending on exchange rate) including shipping you will have your Top Toy ready to use!

Step 3, Once you have your Top Toy and Micro SD you will want to start using it straight away, follow these steps:

1. Download the firmware. You can get it here:

2. Unzip the firmware archive. It should have a file named TTMENU.DAT and a folder named TTMENU (which will contain a bunch of files). Drag TTMENU.DAT and the TTMENU folder onto your microSD card.

3. Make a new folder on your microSD card called "games."

4. Put one or two .nds files into the "games" folder.

5. Remove the microSD card from your PC. Make sure you always use the "safely remove hardware" to remove the microSD card.

6. Insert your DSTT into your NDS. Insert the microSD into your DSTT. You should get to a menu with your games in it. Click on a game to run it.

2 Great places to download games are: http://ds.rom-news.org/ and Romulation - Please note though that legally you should only download games that you already own for back up purposes only.

Enjoy!