edit: I can't emphasize this enough.
If there are errors, check the guide under T5 first, then learn how to report from there ><
[Tutorial] Converting .3DS to .CIA for Dummies!
If there are errors, check the guide under T5 first, then learn how to report from there ><
Converting .3DS/3DZ to .CIA Pictorial
Hopefully noob friendly!
UPDATED! V5.1.4b @ UTC+8 2.45am 24-Nov-14:
...[Tutorial] Converting .3DS to .CIA for Dummies!