|What would you like to do.|
If you want to configure the SMC router as a repeater, I think this woun't help you out.
Because if the signal is weak, it doen't matter whether there is a pc or a router connecting to that netgear router. The signal, the SMC gets, is weak.
The only chance is to put the router at a position, where the signal is strong enaugh.
Otherwise, you have to connect the routers by wire, to solve that problem. But in this case, you may connect your son's computer by wire instead of using an additional router.
Please send a reply, if you solved the problem !!!