I went to the thread and found the particular post mentioned here. The permalink for that post is http://www.greenhybrid.com/discuss/f...02/#post154417.

I don't think anyone has modified the vBSEO settings, which would be the only way to change URL presentation. As far as that post, it's on the first page of the thread, so I'm not sure where index2.html or index3.html are coming from.