Conditional after 5th and last post

[marcus123]

Can anybody post a conditional that will show a code:

After 5th post if the post is not last
Always after last post

[marcus123]

Please does anybody know what conditional will show code after last post?
Or maybe a small plugin that will retreat last post in thread?

[Destroy666]

<if $postcounter == 5 && $thread['lastpost'] != $post['dateline'] then>
5th post not last...
</if>

<if $thread['lastpost'] == $post['dateline'] then>
always last...
</if>

[marcus123]

D666 baby OMG you are awesome thank you so much!