You need to provide more info; are you using a wireless router or a WAP, what brand is it? Have you tried resetting it and with no security does it then connect properly? If you do have security, what settings are you using?
I am using a linksys wireless router and yes it connects when the network has no password. It used to connect until last week.
Wireless Chan: 1-2.412 GHZ
Wireless Network Mode: Mixed
Wireless Network Name (SSID): mynetworkname
Wireless SSID Broadcast: Enable
Status : SES Inactive
WEP KEY which I am putting in right.
Wireless MAC Filter: disable
Everything I have in Advanced Wireless
Settings is what it came with. Defaults