New Post: Pre-fill dropdown list entry

Hello, VERY new to SPServices but have successfully managed to pre-fill the title field (excellent!). I was just wondering if the same could be achieved for dropdown menus? I would like to pre-select the dropdown item.

Title code:
$("input[Title='Title']").val("Hello World"); Works perfectly

I took a similar approach to the drop down:
$("input[Title='DropDownColumnName']").val("ValueToSelect");

Thanks in advance for any help/advice.