If for some reason you own a desktop or laptop without a wireless adapter built in (which I would imagine would be at least a couple of years old by now) you need to get one of these.
Very quick and easy to set up and use, and worked without a glitch so far, good reception too, even in the basement.
Plug and play enabled and tested in older laptops, around the house, even tried it on an old tower system running XP, and the provided install CD made it simple.
Plenty of encryption
Offers optimal performance with Wireless-N networks, but works with Wireless-G and -B networks as well.
Specifications:
Model WUSB100
Standards IEEE 802.11b, IEEE 802.11g
LEDs Power/Link/Act
No. of Antennas 1 Internal Antenna
Connector Type USB
Transmit Power 802.11b: 18 dBm
802.11g: 18 dBm
802.11n: 18 dBm
Antenna Gain in dBi 2 dBi
Security Features WEP, Wi-Fi Protected Access(tm) 2 (WPA2)
Security Key Bits Up to 128-Bit Encryption
For the money this is a great Wireless adapter.