Contact groups not showing up

[MedioGringo]

New N1 and Android user here, but I can't seem to see any of my Google contact groups on my N1. I assumed that I should be able to see a "groups" tab that would allow me to sort by groups, but it isn't there. I set the phone to sync with my groups, but I don't actually see them anywhere under the contacts menu. I'm not sure if this is just a feature that isn't on Android 2.1, but it seems like other G1 and Droid users are able to do this. Any ideas?