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I had a version of windows visual basic. I needed to install it on a computer for some strange reason, but i forgot the installation key. It was some 4 digit number. Anyways, i tried for hours looking for it, when finally I just slammed both my hands on the keyboard in frustration. Apparently, I accidentally slammed the correct 4 keys and the enter button and it started installing. I never found out what the installation key was.