I have a 4 pc wireless network, 3 with xp home and 1 with ME. In the Network Properties dialog box I have Network Authentication set at WPA-PSK and Data Encryption set to TKIP, the strongest settings at this time. What I need to know is if I download the new Microsoft SP2 in the network format, instead of for an individual pc, will having my network in these settings cause any conflicts after SP2 is downloaded. If that is the case should I change the settings back to the original "No Security" settings then download SP2, and after thats done I can reset everything back into WPA-PSK and TKIP for highest security settings again? Any help on this will be appreciated!