New to wireless...

Ok, so after many years of a simple cable modem that plugs straight into my computer, my dad picked up a wireless router so he could work from his own room.  I figured since we had wireless now, this would be a good time to move my computer into a different room of the house.  Now, I'm new to this, remember, so if this is an egregiously stupid question, apologies in advance: Do I need any additional equipment to get wireless elsewhere in the house?  Another NIC, etc?  I didn't *think* most systems came equipped to recieve wireless signals, but I may be wrong.  So please, help me out here.  My dad lost the router manual after we set it up so I can't reference it for more info.

Yes, each computer that you want to connect to the wireless network will need a wireless adapter in some form. This can be a PCI card that fits inside the computer, a USB adapter that plugs (duh) into a USB port, or for laptops, a PCMCIA card that fits into the slot found on the side of most laptops. A lot of laptops made recently come with wireless capability already built in, but very few desktop machines come with this (yet - it might become more common as more homes get wireless networking). Any brand wireless adapter should do - they all adhere to a common standard (probably 802.11g if the router was purchased new, but 802.11g hardware is usually backwardly compatible with the earlier, slower 802.11b standard - ie. an 802.11g wireless NIC will connect to an 802.11b router, albeit at the slower data rate) - you don't have to buy the same brand name as your router. All you need to do is install the NIC in your computer and it should be able to connect into your wireless network with no additional configuration.