Help with DSi roms... please!!

Hi there, can someone help me.I have downloaded some new games for the DSi, but when I extract it the file says DSi file not NDS file like all the other games I have downloaded. When I put them on the R4I card they do not even appear anywhere let alone work!! I am using R4i card with 1.14 firmware.Please help!!
Thanks.

Rename it and end it with.nds

Thanks I did that and it converted to a NDS file. But the game still won't load it comes up with Load Rom Error =-4
please reset system ??

DSi Enhanced games are problematic on many flashcarts. The ones that work have been fixed with Firmware upgrades. I am not sure, but I don't think there are any patches available for these games.

Someone, actually a small team, are working on a patch, to allow you to play the enhanced games on most flashcarts. Don't know when it will be available, but when I know, you'll know. For now, don't expect miracles when it comes to them working at all.

Thanks for your help. I will have to wait until the patches come out.Thanks again. Happy gaming!!