Caslon12000 saidDoes this article help: http://www.realjock.com/article/825/
I thought about this too, and while it's a good example of how to adapt exercises this particular workout really only works well for maintenance, not building strength or losing weight (I did it for a few weeks until I got my resistance bands in the mail, and it was good but never left me feeling sore).
The suggestion to invest in both resistance bands and a cheap set of dumbbells I think is exactly right. Resistance bands allow you to simulate many of the cable exercises. Do yourself a favor and get a set of bands that go all the way from light to ultra heavy. The wonderful thing about resistance bands is that if you get the full set, even if the heaviest eventually becomes not heavy enough you can combine a couple different bands for even greater tension. I quickly found that my heaviest band wasn't heavy enough for many of my exercises, but when I combined the heavy band and the light band it was perfect.
Remember, you can use a lot of things in place of barbells and other weights. I think a set of dumbbells is good if you've got $100 (should be able to get both a weight set and resistance bands on that budget) just because it can be more convenient, but in terms of doing things like squats with weights you can use almost anything around the house that can be filled for weight. I use a USPS box saved from having things mailed to me that I fill with heavy books and hold on my head for weighted squats. You could also get large buckets or jugs that can be filled with water, tied to both ends of a broomstick or some other, stronger bar and used for something like squats or other barbell activities (would also help you with balance as liquid filled anything is less stable than a metal weight; just have to start light to get used to making adjustments and not hurt yourself).
I don't know of an exercise regimen out there similar to the Strong and Lean for home, but if you do a bit of work and research you can adapt it for yourself using a bit of equipment and random things around the house.