How to format these checkboxes for equal spacing using only HTML or little CSS

How to format these checkboxes for equal spacing using only HTML or little CSS. I'm having difficulty adding spacing between the checkboxes even though I have them in a different row they don't seem to be cooperating.

<fieldset>
        <legend><h2><b><u>General Information</u></b></h2></legend>  
        <table cellpadding="8">
            <th>I would like more information abput the followng users:-</th>
            <tr>
                <td><input type="checkbox" name="user">Backpack Cal</td>
                <td><input type="checkbox" name="user">California Hotspring</td>
                <td><input type="checkbox" name="user">California Cabin</td>
            </tr>   
            <tr>
                <td><input type="checkbox" name="user">Cycle California</td>
                <td><input type="checkbox" name="user">Kids California</td>
                <td><input type="checkbox" name="user">From Desert To Sea</td>
            </tr>
            <tr>
                <td><input type="checkbox" name="user">Nature Watch</td>
                <td><input type="checkbox" name="user">Taste Of California</td>
                <td><input type="checkbox" name="user">Snow Board Cali</td>
            </tr>
         </table>
     </fieldset>