ok i just downloaded SNEmulDS for my r4sdhc and i have 1 file for the emulator which is a .nds file. my first question is that all i need just 1 file? and 2 i have 2 websites that i get my roms from website 1 has the name of the game and(u)[b1].smc , (U) [!] , (U) [f1], (U) [f2], (U) [h1c], (U)...