Country Living's site has a few settings including this "Words of Thanks" Thanksgiving look:

HGTV's offer beautiful Thanksgiving centerpieces on its site.

Check out Pottery Barn's "Thanksgiving Table" inspiration page:

Southern Living's Pint-Size Pumpkins & Blooms (Now this photo shows an outdoor flower box but it can easily be done inside on your table):

(You can also check out the Southern Living web site has a two minute video with 100's of ideas:
I love the white pumpkins: White Autumn by Better Homes and Gardens
