just change
code:
var INIFILE = MsgPlus.ScriptFilesPath + "\\conf.ini";
to
code:
var INIFILE = MsgPlus.ScriptFilesPath + "\\"+ Messenger.MyUserID + "\\conf.ini";
It's about the 6th line (1st actual line of code though
PS: I was wrong, it's an ini file, not registry keys