You can use this filter to add your fields.:
apply_filters( 'show_password_fields', true) );
add_filter( 'show_password_fields','youfunction' 'yourfunction', 10, 1 );
function youfunctionyourfunction( $return )
{
?>
<tr>><tr>
<th><label for="gender">Gender</label></th>
<td>
<label><input type="radio" name="w4p_user_gender" value="male" class="regular-radio" />Male</label>
<label style="margin-left:10px"><input type="radio" name="w4p_user_gender" value="female" class="regular-radio" />Female</label><br/>
<span class="description">Please select your Gender.</span>
</td>
</tr>
<tr><?php
return $return;
}
I don't know if it isit's a good idea or not, but it works for me. :).