I've just saw theres a program by skippy76 called "net detection". Sorry wasnt here for a while... though it doesnt do the things X's sync does..
i'd say its a great program he made. (haven't tried it yet).
If anyone got problems with the detection of LAN, maybe he could use "net detection" and use it with X's sync.
just a thought [i prolly won't support X's sync.. ]