When you're uploading your DKP information, you can associate the raids information with a calendar event. Then on the calendar, when you click on the event, you use the drop down to switch between "Signups" and "Attendance" as well as aggregate data like "Present for all snapshots" and "Attended at least once"
Or am I not understanding your question.
Thats a great feature and I didn't know it existed...
What I'm looking for if before the event happens though.
For example, right now my guild has 6 amazingly skilled priests - we need 4 per raid, and they all are neck and neck on attendance. So it's not that I can clearly say priest A has been here more than priest B so he deserves to go ont his raid, I have to go look at his 60 day attendance and then compare it...