Welcome to SF,
What type of
Security or Firewall Software do you have installed - Norton, McAfee etc...?
Check your browser settings for any proxy servers, remove it if found.
How to Remove a Proxy Server | eHow.com
Verify that all your Network Services are Started.
Click on Start, type
services.msc then press enter.
• COM+ Event System (for WZC issues)
• Computer Browser
• DHCP Client
• DNS Client
• Network Connections
• Network Location Awareness
• Remote Procedure Call (RPC)
• Server
• TCP/IP Netbios helper
• Wireless Zero Configuration ( XP wireless configurations only)
• WLAN AutoConfig ( Vista wireless configurations only)
• Workstation
Please post an update of your progress.