Changing SN/AK Info??

[NetNomad]

No... on the network options menu there is only UDP option, Provider option, and Purchase a Hunter's License. On the screen for Serial/Access Key, it only shows the current info, with no option to change it.

I managed to get online with my second card (RAmarl, HUnewearl, RAcast, FOnewearl), and ask around... what I really heard was, there was no way to do it. One person suggested deleting the network info, but that didn't help at all. What I noticed is, when I tried getting on with the second card it asked me for my SN/AK, and asked to create a password. I did this. But when I got online with the other card, it just connected - using my friend's SN/AK. I reset instead of choosing a ship that time. I wonder, if he cancels his accound and I try to use it, what does it tell me? Maybe then, it'll offer me that option to change my info?

The other question is, in what file is the SN/AK/Password stored? The Guild Card file? The System file? It can't be the character file, that'd make no sense. If I delete either of the other files, what else will that affect?

EDIT: AAAAAAAAAAAARGH!!!! The idiot friend, he told me to delete the wrong file, and it deleted my characters! All four of them!! 400+ hours of play, GONE. BAH!!

At this point I have another question: WHAT is possible using AR? I'm not asking how to do it here... but I'm asking if it's possible to custom-create you character's statistics, what materials they have used, etc... I just want everything back the way it was before this debacle. My items are backed up, but there's no replacement for character stats. Until then, I don't want to try to get online...