how replace t[thread_id]-last-post.html & new-post.html by t[thread_id].html

hello
I have seen that google report for
t[thread_id]-last-post.html
t[thread_id]-new-post.html
as a duplicate title problem for
t[thread_id].html

so any suggestion to fix this problem?

thanks so much in advance

Hello ,

last-post.html or new-post.html should not be visible to Google as those are only visible to Members.

thanks for reply
how make it not visible for Google ?

also smoe time member put the links for last or new post on there posts
so is there away to let Google not archive them by using robots.txt
if so
is this right
Disallow: /t*-last-post.html
Disallow: /t*-new-post.html

thanks again so much for your fast reply and help

On default vBulletin templates , new post is not visible to guests. So unless you are using a kind of mod which treats Google members , these should not be visible to Google.