Just take regular css button designs, and apply that CSS to a link (in exactly the same way as you would to a button).
Example:
<a href="#" class="stylish-button">Some words</a>
<style type="text/css">
.stylish-button {
-webkit-box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
-moz-box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
box-shadow:rgba(0,0,0,0.2) 0 1px 0 0;
color:#333;
background-color:#FA2;
border-radius:5px;
-moz-border-radius:5px;
-webkit-border-radius:5px;
border:none;
font-size:16px;
font-weight:700;
padding:4px 16px;
text-shadow:#FE6 0 1px 0
}
</style>