There are no items in your cart - go add some ! (Change Link)

Hi

I need to change the link when I click on the empty shopping cart. It's a long story but I don't want it to default to my shop but a different page.

"There are no items in your cart - go add some !"

Where do I change it?

I also need to remove all product links in the checkout page. I need a continue shopping button instead.

Many Thanks
Kieran