Webcam Diagnostics is an analysis and control tool that tells you if your system is ready to be compatible with a webcam. The program doesn't need installing, and needs almost no user intervention at all. It automatically analyzes the configurations of the system and studies diverse parameters that could influence a webcam (for example, the version of DirectX installed, system administrator privileges, processor, etc).
In addition to the information, in some cases Webcam Diagnostics lets you go further and adjust or fix some of the missing requisites. Other additional information this program shows is the USB connection, devices and drivers installed, etc. A fundamental help if you want to install a webcam in your system or don't want any bad surprises when you install it.