I've downloaded and installed 7-zip. I've downloaded a program I want to decompress and install and had hoped to use 7-zip to do it. But the 7-zip help files don't seem to be written for someone like me who has no idea how to go about this. Can someone just outline the simple basics?
Simply right-click on the respective file, then choose "Extract to..." (or whatever that is in your language if you use a localised version) and choose the folder where you want the file to be extracted. If that doesn't work, I tend to say that's due to a "bad installation".
Hope that helps