need to build robot ( or machine) to do spray job

need to build robot ( or machine) to do spray job on a wooden board of size around 20 inches by 20 inches. The size of the wooden board varies from time
to time.
1. there is spare PC and serial port to do job how to build a robotic from srectch. I do not know.
2. what is the easy way? I do wish to buy experience robotic arm.
3. any url
TIA developer
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cnc router with spray attachment, really easy to understand, a little bit of work to set up, but if you build it yourself you can save much cash. i've seen that size go for several thou easy, but you can set your own up from parts for maybe 300.

http://www.luberth.com/cstep/ for example, it's a decent one among the hundreds of sites. but if you want an articulated arm you'll have to get innovative, the same basic stuff that makes a cnc router work can be added to an arm from a desk lamp

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nothing there

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what didn't you find? the site? been there years, may be a temporary glitch.
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Not to change the subject but are you pretty happy with this client? I love the Opera browser, and my favorite mail client so far is Thunderbird, but it's got a few holes.
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