[NUKEYOURASS]

whenever i start the emulation(DS game) it says something like "the data you ebtered is invalid. please restart your DS".

wtf is wrong?
HELP!?!?!?

 

[imlost]

You didn't set the correct save type. Follow the instructions here on how to set the correct save type. Then save the settings, and reload the game or restart the emu (close and run the emu again).

 

[SCHUMI_4EVER]

There's help in the stickied FAQ if you had bothered reading it.