Just copy and paste the link . Put a < before the whole thing and a > after. Change the "text here" to anything you want to put.
replace #FFCCCC with the colour you want your background, and black for the font colour. If you want a larger font just alter 12px to a higher number. Don't forget < and > beginning and end.
a target='_blank' target='_blank' target='_blank' style="background: #FFCCCC;color: black;font-size: 12px;font-weight: bold; cursor: text;text-decoration: none;">TEXT HERE</a
label
There is tutorial on how to do it here
http://www.theanswerbank.co.uk/ABTutorial.html
which probably explains better than I have done !