OK, more software; for the interested non-pirates out there, there is a pretty cool (IMO) mechanical design package out there for free. Its a lite version of the industry suite Pro/Engineer, called Pro/Desktop Express. (the free version dont render fotorealisic nor anims but thats the only limitations; you can even write new apps for it thru its API if you want)
You can import parts from the extensive online parts library (nuts & bolts etc.), as well as other formats like dwg & dxf
main site: http://www.ptc.com
direct link: http://www.ptc.com/appserver/it/icm/cda/icm01_list.jsp?group=201&num=1&show=y&keyword=355
the library: http://www.ptc.com/community/proe_catalogs.htm
user site with some tutorials & stuff: http://www.prodesktop.net
some quick examples I did with it: http://www.angeltowns.com/members/driftz/PROD.html
Greetz
Oh yeah, I’m not affiliated ;D