http://www.youtube.com/watch?v=6MtjHKxEW4M&feature=channel
http://www.youtube.com/watch?v=m6PODAj-RBg&feature=channel
putting in interior walls
http://www.youtube.com/watch?v=-BqjDnmx90A&feature=related
importing files into sketchup
http://sketchup.google.com/support/bin/answer.py?hl=en&answer=36217
build a basic room using google sketchup 7 8:30
http://www.youtube.com/watch?v=vopj3TwHK-I&NR=1