I have a Wii that I want to put a mod chip on. It's an older Wii, and I've checked the serial number against the serial number tracker and it should be D2A (I think that's it, definitely not the newer C version). So anyway I have a tri-wing screwdriver already, and I'm planning on getting a Wii-Key pre-soldered to a Wii-Clip. I have modded stuff before, such as my old Xbox where I had to format and install a new harddrive. Is there anything else I need to know or do you think it will work fine? Does it matter if my Wii system software has been updated? Thanks!