Can anyone out there help me? I am trying to build a macro that will save me tons of time but is it possible?

I need a macro that will allow me to copy the contents of a cell and paste it into another cell just by clicking on the first cell and then selecting and clicking on the cell onto which the data is to be pasted. In other words, I could go through large amounts of data simply clicking once to copy and once to paste.

It sounds too good to be possible. Can anyone help please?

Regards

Carl