SP 2 Update- Cannot connect to secure wireless router

[Guest Eric S]

Since installing the Service Pack 2 Update, I have been unable to connect to

my wireless router when it is secure. I obviously have the WEP key, but

Windows refuses to communicate with the router.

 

When I turn disable the security, I am able to connect just fine.

 

I still have this problem when I turn the windows firewall off.

 

Can anyone offer any advice?

 

Thanks.