I tried this program out earlier, however soon after installing I noticed that the 7-Zip option on my context menu no longer appeared. The option was enabled within 7-Zip itself, but despite reinstalling 7-Zip, as well as uninstalling WindowBlinds through the control panel, the option would not reappear. I don't know if this is an issue with WindowBlinds, but if anybody has any ideas it would be greatly appreciated.