What is carry trade?

I really find it difficult to understand carry trade. Could someone explain it to me? And show me some simple computation that may reflect the practical application of the carry trade. Thanks.

YM: white_tux2005
Skype: khalihgs

This might help, The Carry Trade - College: Carry Trade - Beginner’s Guide to Forex Trading, Free Forex Education, Learn to Trade Forex, Forex Training - BabyPips.com