Macro to Append Data

In need of macro that will do the following:

(1) Copy data from Book1.Worksheet1 in range a1:j2
(2) Paste values into Book2.Worksheet1 in range a1:j2

The values in (1) refresh periodically. When they do, I'd like to be able to hit the macro button proceed to (2) again, but this time the data will append to the bottom.

Thanks in advance for the help.