From what I've read (and what I experience w/my daughter, who will turn 1 tomorrow), if you keep them up later, they will wake up earlier and be sleep deprived. If you want to move their schedule, you will have to do it slowly over a week or so by moving it (whatever direction you need) by about 10 or 15 min at a time). So tonight, I would say put her down whenever she's tired or at her previous time, which would be 6:30 tonight and start trying to move it tomorrow after she's gotten a good full night's sleep tonight.
Then, the next night put her down about 10 or 15 min later. If she sleeps to her "normal" wake up time (which would now be 6ish), then keep her on the same schedule until her wakeup time moves about the same time foward as well (probably about three days... that's about how long it took my daughter to move). Then put her down another 10 or 15 later.
As you can see, this could take a couple of weeks to move the schedule an entire hour. You can always start this before the time (in the spring) so that you're half-way there by the time change. My daughter was just about the same age at daylight savings time during this past spring, and I didn't think to start ahead of time, but my daugher was pretty easy and we had her adjusted by about a week and a half.
I hope that helps.