Use checkbox to move data from one sheet to another?

[Jaron]

I am an intern for a power company and they want me to create a estimate form for them. They want me to enter estimate data(labor cost, material costs etc) into categorized sheets, and then they want to be able to browse those sheets and click on the item they want and have that item populate a row on a estimate form found in the same workbook. I have been trying to use a check box in front of the items, so that when checked the item will be sent to the estimate form, but I cant figure out the code to do so. In short, I need to know how to send data from one sheet to another simply by clicking on it. Any help will be greatly appreciated. Thx.