TUTORIAL : shadow at the link

dashboard > design > edit html

press Ctrl + F and find this code

]]></b:skin>

paste this code (the one that's given down here) on top of that earlier code

a:hover {
text-shadow: 1px 1px 2px #000000;
font-weight: bold;
text-decoration: none;
}

THIS COLOUR : the colour of the shadow. pick your own here

THIS COLOUR : thickness of the shadow. suits yourself

SAVE AND DONE!