I have a wireless router with a desktop connected to it and a wireless enabled laptop.  I can connect to the internet with both.  I can see the other computer in windows explorer, but when I click on it to access, it asks for a password.  Can anybody tell me where this password is setup?  I don't remember making one.  Also, XP doesn't want me to share any folders because it says my network is not secure from the internet.  How do I make it secure?  The help is appreciated.