Copy Data from one worksheet to a main workbook

Hi Guys,

Great work with the website.
Just need some help with a small spread sheet I'm doing.

File A is populated - it has a maximum of 10 columns, however the rows can change from 2 to 2000.

I'm hoping for some code so I can hit a command button to do the following
Copy & Paste worksheet from File A to File B, copy all rows, add it to a new line in File B but only copy the rows that have data in it.

Sorry if this sounds confusing

Regards
Mark