It's illegal. To download the game OR use a "no-cd" crack is illegal. It is legal to make back-up copies for your personal use so long as you have not altered the files in ANY WAY.
So technically, you can not download it, but it's a moral issue if you choose to or not.
NOTICE: Anyone giving advice to commit illegal activites on this forum will be dealt with appropriatly. It does not matter what you think is wrong or right or if I'm a jerk or not, TF will not be put in jeapordy due to these issues. Case closed.