When setting up WPA you will see the option for either a radius server (Enterprise, and you see this in the corporate environment) or a place to enter a passphrase (Pre Shared Key, PSK).As long as you use the same options for both, you should be fine. WPA-TKIP or WPA-PSK is typically the names for personal WPA. My problem was not actually answered by the TP-LINK technical support staff.We recommend that you copy only the URL pointing to this page, and not the entire page, as we update it frequently.
Then if your operating system is windowsxp please follow the attachment to have a try.(they sent me a file attachment with the email) If your operating system is vista please refer to
Step 4 Select the Wireless Networks tab, and then select the network from the bottom list.
Select Properties once you locate the wireless network causing the error.
If you are not able to connect to Wireless Pitt Net using our automated wizard, you can manually configure your computer using the steps in this help sheet. Right click on WLAN Auto Config and select Properties. Set Startup type: to Automatic, click Apply, then click OK. Note: In Control Panel, set View by: to Large Icons.
Note: You must have installed the In Common certificates before completing the instructions below.