Found it! If you need it to check the condition of two fields, here is what you need...
Code:
<if condition="$post[field#] == 'Option'">
<elseif condition="$post[field#] == 'Option'">
<td class="postbitbg7" width="175" style="border: $stylevar[cellspacing]px solid $stylevar [tborder_bgcolor]; border-top: 0px; border-bottom: 0px id="td_post_$post[postid]">
<else />
You need to change the red # to the field number you want to use as well as the red Option, which is the text for that feld.