Summary: In this fourth installment of the "Some Assembly Required" column, Scott Hanselman and Bryan Batchelder find a piece of hardware so compelling—and with included software so bad—that they write their own version using the .NET Framework 2.0. You can buy a little wireless key fob with USB Receiver manufactured by a no-name company and billed as a "Wireless USB Security Device" from a number of online retailers that is meant to lock your computer when you leave and unlock when you return. However, the software it comes with is terrible. So, we figure—Some Assembly Required. (Hopefully the company will ready this article and start using our software!) We'll also extend the application with all-new functionality using plugins written in Visual Basic!