Attached Link: http://www.turbosquid.com/FullPreview/Index.cfm/ID/275280

I found these circuit boards, but some don't have readme's and I don't have the files with me at the moment, so I can't tell you where to find them.  Most are in 3ds Max's proprietary format.  I'd guess that I got some of them at Turbosquid as freebies (the link is to the one 3ds model). The textures wouldn't hold up well in close-up, so a fair amount of work would be needed to really go to town with this idea.

My visual indexes of Poser content are at http://www.sharecg.com/pf/rgagnon