I need to refinish the hardwood floors in my new house. I was going to rent one of those giant drum sanders to do the job, but everywhere I read says that unless the floor is 3/4 inch thick, you should consult a professional. Mine is 1/2 inch, and if I had the funds to consult a professional, I wouldn't have been researching the topic in the first place.

My question is: what equipment *should* I use to sand the floors? Is there a special technique I should employ? Any additional tips would be appreciated.