Macro - If adjacent cell contains any data, then copy data from another cell. Possible?

Hi,

I wondering if it is possible for a macro to recognise whether or not there is text in an adjacent cell, and if there is, then to copy data from another adjacent cell.

For example, because there is data in C2, data from A2 has been inputted into B2. And any blank cells are left alone.

a	b	c	d	e
ref1	(cell A2 data here)	DATA	DATA	DATA
ref1

Any ideas/help would be very much appreciated.