The DSTT does not support changing between multiple skins from the menu (it can only have one skin at a time). The skin named "default" is the one that will appear in the menu. To install a new skin, replace the files in the "TTMENU/skin/default" folder with the files of the same name from your new skin (or rename the "default" folder to something else and create a new "default" folder and then place the files in the new folder).

You can also try the SkinSelectorTT application, which allows you to install multiple skins on your microSD card and change them.

Here's a simple NDS skin: http://filetrip.net/f3842-NDS-Skin.html

You can download other skins here: http://www.ndsthemes.com/themes/title/dstt

If you want to have a hand at creating your own skin, you can grab the Skin Customizer. Get it here: http://filetrip.net/f1490-DSTTTTDS-Skin-Cu...r-1-07-R22.html

To play GBA games, you must have a slot 2 cart, such as a GBA expansion cart. The most popular one is the EZFlash 3-in-1 (it's a 3-in-1 because it has rumble, it acts as extra memory required by the Opera browser, and most importantly it lets you play GBA games). The one that used to come bundled with the DSTT is the eWin 2-in-1 (no rumble). The eWin 2-in-1 is no longer manufactured and is difficult to find.

A GBA expansion cart doesn't have its own microSD card slot. Instead, it has enough internal memory to store one GBA game at a time. The game (a .gba file) is loaded from your DSTT's microSD card to the internal memory of the GBA expansion cart in order to play the game. This process normally only takes a few seconds. As you play the game, the game save data is stored to internal memory of the GBA expansion cart, and is later saved to your slot 1 microSD card after you reboot your NDS the next time.

In order to load GBA games stored on your DSTT's microSD card to your slot 2 GBA expansion cart, you'll either need to run a loader program such as GBA ExpLoader, or install YSMenu (which can load GBA games directly to a slot 2 without the need for a separate loader). Get GBA ExpLoader here: http://filetrip.net/f10382-GBA-ExpLoader-0-58b0MX.html

If you're using the official menu, you may also be able to use GBAldr to load GBA games to the EZFlash 3-in-1 and 3-in-1+.

To update your cheat database, grab the file that ends in "_USRCHEAT.DAT.zip" from http://cheats.gbatemp.net/Temp/ then unzip the archive and put the USERCHEAT.DAT file into the TTMENU folder of DSTT(replacing the one that's already there).

To enable cheats for an individual game, select the game and press the plus button on the touchscreen (or press SELECT) to be taken to the game options menu. Select the option to turn cheats on. Then select the cheats tab (or press right) to access the list of cheats. Once finished save your selection.

You can turn on and off cheats from within a game that's running using the following button combinations:

    cheats off: L+R+START+DOWN
    cheats on: L+R+START+UP