Ooooh. That's a bit different than what I expected.
There's a trick you can do when the Blue Arrow is enabled on the board - link to any topic with "#LATEST" at the end of the URL, and it will direct you to the latest posts... that's what I thought you were gonna ask for.
Oops.
This is a bit harder... but still possible.
Now... you want the users to jump to the last page of posts, but not directly to the last post in the topic? Because the last post link under the time (on the right) would be a link to that post, and telling people to just click that would save the annoyance of the hack.
Also, just to make sure, you want the last page to have the latest posts, right? You don't want to use the "Reverse Posting Order" option? Please say no, please say no, please say no...