This code should hide all your borders on Myspace (correct me if Im wrong).

<style type=”text/css”>
table table { border: 0px }
table table table table{border:0px }
table, tr, td { background-color:transparent; border:none; border-width:0;}
table table table {
border-style:hidden;
border-width:0px;
border-color:000000; }
</style>

Just copy and paste it into your profile.