Need help backing up saved game

[Falc]

Hi

I want to backup my pokemon saved file, I am using an acekard 2, is that the right type of hardware? Do i need any slot 2 device? I am trying to use the wifi tool to move the saved game

I am following this guide:

http://www.monroeworld.com/myfaq/index.php?action=artikel&cat=7&id=85&artlang=en

It says:

Plug your DS into wall power. Start up your DS, and run the Backup Tool on your DS.

How do i do this? I've moved the nds_backup_tool.nds file onto the micro sd cad, but the mircro sd card into the nds-game-card, and put that into the ds, however when i turn the ds on and select slot 1 game, it stays on the loading screen indefinately.