Check Out Completed layout

I would like to modify the checkoutcompleted page.

This is the page I get returned to after completing a payment to Paypal.

Here is what I woul like to change:

1.   I want the "Click here for order details" to say "Next"
2.   I would like the above link to be a button, not a plain link. (and still go to the order detail page)
3.   I would like to remove the "Continue" buttion.

Any help in getting started to do these changes would be of great help.

Thanks,
John Long

Look at PaypalExpressReturn.aspx page if you're using PayPal Express