Absolutely!
Waht you would need to do, is pass some variable in the link:
<a href="show.php?myvar=1">Show All User Account Entries</a>
<a href="show.php?myvar=2">Show All Admin Account Entries</a>
In the show.php you would then have:
switch($_get['myvar'])
{
case 1: // show users
$whereclause = "where status = 'user'";
break;
case 2: // show admin
$whereclause = "where status = 'admin'";
break;
}