I've been accepted to this program and here's what I've learned so far:
- only accepting 15 students per cohort, so it's significantly more competitive
- the post above is right - they guarantee funding for five years. sweet deal!
- not sure how the GRE scores factored in; however, I applied to another program at UW-Madison that put a lot of emphasis on GRE score; I was pleased that the Soc department communicated minimally about the GREs. it really does seem like they looked at the 'whole package.'
I'd suggest sending your top professor an email with your interests, scores, and how your research would be furthered by working with him/her. In general, I found the UW folks very helpful, if time-crunched. You could also call the Sociology Department and ask any general questions of the secretary. They were happy when I asked for a grad student or two to contact with further questions - that has been incredibly helpful!
Good luck!