Connecting additional computers to an Actiontec MI424WR wireless network in Windows XP
Remove the cap from the ZyXEL USB adapter. It has "ZyXEL" printed on it. After your computer restarts, insert the ZyXEL wireless adapter into an available USB port. A message will display in the lower right Taskbar that new hardware has been found. When the adapter has been configured and the software loaded, additional messages will display until a final message tells you that the hardware installation is complete.
When the ZyXEL Utility window opens, click Site Survey.
Click Scan to display all the available wireless networks. [Show Me]
Select your network from the list and click Connect. [Show Me]