Windows cannot connect to network

Windows 7 will not connect to any of my wireless networks. It recognises them , but will not connect. It was working fine for the first 2 weeks.Then I woke up one morning and noticed the problem. I can connect using LAN its just the wireless.Using a netgear WGR 614v6

Please download RenewMyDNS by DragonMaster Jay.

• Save it to your Desktop.
  
• Right-click on the file and select Extract All...
  
• Choose a location to save extracted files and keep pressing Next until Finish.
  
• Double-click RenewMyDNS folder, then double-click RenewMyDNS.bat to start the program.
  
• Follow the prompts, and when finished it will launch a log.
  
• Post that log in your next reply.
  
• After posting the log, delete the folder RenewMyDNS.