heres a couple of pics and a few links, the first link is the simplest, although you shouldn't underestimate it, that guy knows his shit
the second link is more involved and permanent, that guy knows his stuff too
the third is an old thread but an awesome cab

hopefully, these will answer some of your questions

oh, and don't be offended by kingkronic, you're new here so you have no way of knowing how often noobs show up and ask very simple questions that show they've done absolutely no research
there's lots of useful info here you can find on your own if you look and there's lots of knowledgeable people willing to help you, we just get so many looking for someone to hold thier hands, lol

anyway, good luck and i hope this helps

http://boards.cannabis.com/grow-log/...-grow-log.html

http://boards.cannabis.com/grow-log/...first-run.html

http://boards.cannabis.com/closet-ca...h-cabinet.html