I agree with Upward, this isn’t a super-easy lighting setup.
With the white seamless, you have to make sure that the curve at the bottom is smooth enough that you can light that evenly. You can do the background with two lights (don’t worry about reflectors, but put a little diffusion on the front to even them out). To get the background white, you’ll want it to be 3 to 4 stops brighter than the foreground. That means (in very simple terms, ignoring a lot of the reality) that if you’re shining 100w of light on the foreground folks, you’ll want to shine 800w of light on the background.
The second link didn’t work for me, but it looks like they’re doing the “standard” 3:1 ratio for a right key. That means that the lighting on the people from the right is about 3x brighter than the lighting from the left. (Look at the “Mac’s” face). It’s big and soft, you could try shining your light through a bedsheet that’s about as tall as whatever you’re shooting. Realize that you’re going to lose 2-stops of light going through the sheet, so if you want to get 100w of illumination, you need 400w shining on the bedsheet.
If you’re shooting people, “some lights” will probably not be bright enough. You’ll end up with motion blur from the long shutter speed (I assume your lights are not flashes?).
If you’re just shooting small product, check this out: http://www.strobist.blogspot.com/2006/07/how-to-diy-10-macro-photo-studio.html