Move Completed Items to a new worksheet.

Hello. I'm new to this forum, but have seen a lot of helpful threads.

I have a document with several worksheets in it (one being a completed worksheet and the other being months of the year). I am keeping track of tasks and upon completion, the word "Completed" is typed in column 'G'.

For the life of me, I can not figure out how to make each line item populate from the current worksheet (May 2013, June 2013, etc) into the "completed 2013" worksheet. I want to make the row hidden in it's current worksheet and populated into the "Completed 2013" worhsheet when "Completed" is typed into the 'G' column.

Any advice is GREATLY appreciated!