The Tournament Director is great software for running a tourney. But it's blind structure is not very useful. It gives off denomoinations to bet that aren't related to number of chips people really have.

For example, I just asked for a blind structure for a 10 person tourney that lasts 4 hours with 20 minute levels and without rebuys. Here's what it suggested:

15/30
30/60
45/90
60/120
75/150
90/180
105/210
150/300
195/390
240/480
285/570
330/660