Posts Sort By - Query

Hello, I would like to search user's posts by his/her last post date...

For instance, if I follow this link: http://www.india-forums.com/member_posts.asp?PF=359567

It sorts the topics by last post in that topic (no matter whoever the poster is).

What I would like to do is, I would like to search a given member's post by his/her last post date.

Tell me if it is confusing to understand; I'll then make a more descriptive explanation.

Thanks.