Download : ChamServer
No installation required. Simply copy the exe to any folder and it will search for all .prg files in the folder and sub-folders. Be warned though, if you run it from the root of the drive, it will search all sub-folders and may take a very long time to start.
The aplication will search for the chameleon when it starts up and when a usb device is plugged into your PC. Once you recieve the "Chameleon Found" message, simply double-click any file to send it to the chameleon/C64.
You can use the remote control panel on the right to send keypresses to the C64. After every keypress, the screen will be read back and displayed in this panel.