You can do it using PHP:
$result = mssql_fetch_array($connectionResource);
extract($result);
//this next line assumes you have a field called 'name' in the table,
$nameArray = explode(' ', $name);
//now you have an indexed array with all the parts of the name
//assign as appropriate, tacking on the ' Jr.' to the 'Tate, '
$firstName = $nameArray[0];
$lastName = "$nameArray[1] $nameArray[2]";
This isn't the most elegant, but it works ...
An even easier solution would be to add a row to your table: lastName, and change the name row to firstName.