Excel Data

I need to create a spreadsheet that will be pulling data in from an external source. I will need a column that will copy the contents of one of the external source columns and then modify the text. For example, if A1 has WIDGET in it, I need for B1 to copy, and edit that data to *WIDGET*.

I need to add the astericks to the beginning and the end of every value from the A column into the B column.