Each one better than the earlier one! Thats how the Windows 7 themepack releases from Microsoft are, these days. The newly released Autumn Bounty theme is a must donload, in my opinion.
Windows 7 Autumn Bounty theme
This 5.68 MB download, contains 9 high-resoluation images of freshly harvested fruits.
Feast your eyes on the fruits of the harvest in these artistically staged autumn tableaus that depict the richness of the season. A free theme for Windows 7.
If you want to use the wallpapers, navigate to the following folder and pick the ones you want.
You might also want to check out this beautiful Autumn Colors from Japan themepack.