Is it possible to easily turn on/off access to my wireless router (WRT54GS) to WLAN users e.g. allow my wife to access the wireless from her laptop and block my daughter from the wireless from her laptop? I was playing MAC addresses and messed up my router....rookie here.....that's why I said easily. I would like to open the net for 1 hour a day for my daughter but don't want to limit others. thanks in advance.