Paperbox - How to turn a 3d into a 2D pattern

[sheebom]

Hello,
I have designed a box in 3d and I would like to make it in paper. For this I need to turn my 3D model into a 2D flat model which I can cut print, paste and assemble. Is there a way to do this automatically from the 3d model i designed on sketchup ? If not, do you know a programm that can do it ?
Thank you for your answers.
sheebom

ps : herewith an exemple of a 3D model turned into what I call 2D flat to make it clear.

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[gilles]

Try this:
http://forums.sketchucation.com/viewtopic.php?t=27528#p238568
there is also unfold.rb there:
http://sketchuptips.blogspot.com/2007/08/plugin-unfoldrb.html

[sheebom]

Thank you. it sounds good, I will try these.
Cheers,
sheebom