Creating a software manual. Any supporting packages?

So I am about to start writing a manual for a piece of software. Are there any packages available to depict radio buttons, check boxes, tabs, menus etc.?

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Though I don't know any packages that include symbols of radio buttons, check boxes, etc. I know some good GUI mockup software. I'd recommend using standard figures from mockup software, like the Pencil Project. It's licensed under GPLv2, and I think figures from mockup software are pretty straightforward. You could even use those graphics as inline images using a simple raisebox ensuring correct vertical alignment like this:
\raisebox{-0.5mm}{\includegraphics{button.png}}