This Tweak Removes all banner ads from LimeWire 2.5 (may possibly work on older versions but I did not check). When performing this tweak, LimeWire must be completely shut down. If you simply 'x' out of the program, you must also exit LimeWire from the system tray.
1. Go to C:\Program Files\LimeWire
2. Delete Cbanner2.dll and ads.war at the SAME TIME.
3. Restart LimeWire and enjoy.
If the Tweak does not work, try uninstalling the program and deleting the LimeWire folder from C:\Program Files. Re-install the program and follow the steps above before ever running the program.