You need to ensure that your wifi point does not have any encryption, or MAC filtering.
If it does, then you need to enter the MAC into the wifi point/router as 'allowed'. If your network uses encryption, then you need to enable this when you set up the encryption. you do not need to put full stops between the hex code of your password, but note some routers need this entered in caps ie - A1B2C3
See -
http://wifi.aximsite.com/wifi_net.html
Or do you mean network as in LAN, and you are connecting via active sync?