99.9% of all setups I\'ve seen are free modem, free installation, and like 3 free months. The only thing is that you need to sign a contract saying that you will stick with it and pay your monthly 50 dollar (roughly) fee for like a year or so after the three month free period. Be warned though, it all really depends on where you live.
If you are in a densely populated area with lots of kids and computer savvy adults, your cable speeds might be compromised during peek hours with possible speed download and upload caps. SOme caps slow you to roughly 50k/sec downloads in the most extreme cases (where i live). I use DSL, last night, I was rolling with over 400k/sec in seperate downloads while uploading a mere 11k/sec as well. Cable is much faster, but that\'s pointless if your area is filled with people who have it and with people who use it constantly since you all are virtually sharing the same bandwidth.