accidentally changed "open with" properties (NDS)

cosymousebut they arent working? :(
Post Merge: [time]1278197554[/time]
oh my god, i warned that i was an idoit. I deleted the edge data from the memory stick ...my bad, i do apologise!

means he already solved it himself.....

cosymouse:( i dont know what No$GBA, i guess i just need to know what progam file should i be putting there? is that the same thing?i dont want to actually open the files on my laptop, i use them in my ds, does that make a difference?

*5X FACEPALM*If you want to open the NDS file with a computer you need an emulator.
Emulator = a program that runs the game/program on an other system then the one is was designed for.
No$GBA = NDS emulator for computer.And if you deleted the EDGE data go to http://www.edge-ds.cn/ and download the data again.