wait, singnet uses a ADSL modem while starhub uses a cable modem. If u are saying to share with ur dad's, den who's going to utilise ur singnet? and if back into the topic, getting to share with ur dad, u basically need a router, if u plan to go wireless, u either need a wireless PCI card, or a wireless USB or PCMCIA wi-fi(for laptop)card. And other situation when u dun need to use all these at all is that if ur dad's computer is not connected through the ethernet port, but connecting through the blue colour bridge(NIC = network interface card)which uses the USB port, which im still using( i subscribe the 5th yr), u juz basically need a cross cable, connect it to ur dad's ethernet port, and to ur computer's ethernet port and u can share the connection. dunnoe if u have to configure to the same MAC address though.