Disable Java auto update in Windows 7

After you installed Java Runtime Environment (JRE) in Windows 7, it shows up in Control Panel > Programs. Clicking on it will open up the Java Control Panel. We are able to disable the auto update function in Java by un-check the "Check for Updates Automatically" in Updates tab. However, in Windows 7, there was a problem for disabling auto update. The settings will not be saved, meaning to say the next time you open up the Java Control Panel, the auto update is enabled again. It is due to lack of administrative right in Windows 7 environment.

Java Control Panel - Update tab

Remove delay in LAN games under Windows 7

I find it weird when last time playing Warcraft III LAN game with my housemate, we both feel a bit of delay on the client side (joining one). After doing some search on web, we found that by modifying a bit of registry, the strange delay was removed. This only happens under Windows 7.

1. Open up Registry Editor, navigate to HKLM\SYSTEM\CurrentControlSet\services\Tcpip\Parameters\Interfaces\
2. Look for a subkey name similar to this: {E3CF3EE3-AE61-4A50-8121-2A6CF502EF0F}
3. Inside the subkey, there is a value DhcpIPAddress, check if it is the IP Address given by your router. If so, add 2 new DWORD (32-bit) keys with value as follows:
     TcpAskFrequency    1
     TCPNoDelay    1
4. Restart your PC.