Inserting blank rows

I have a spreadsheet with over 6000 rows of data. Is there any way to insert a blank row between each row with data. Thanks

Try this video.
It's an Adobe Flash movie.

Hope this helps you
Ola

I can recommend what I use as a viewer: Irfanview + 'all PlugIns' (to get the Flash player).

Thanks very much. This will save me hours