Here it is in the newly updated 2011 NIV: (cut and pasted from Biblegateway.com)
Psalm 100 (New International Version, ©2010)
A psalm. For giving grateful praise.
1 Shout for joy to the LORD, all the earth. 2 Worship the LORD with gladness; come before him with joyful songs. 3 Know that the LORD is God. It is he who made us, and we are his[a]; we are his people, the sheep of his pasture.
4 Enter his gates with thanksgiving and his courts with praise; give thanks to him and praise his name. 5 For the LORD is good and his love endures forever; his faithfulness continues through all generations.
0.Psalm 100:3 Or and not we ourselves