I have installed a blog on my website and the top page is a blogtree. Then there are 2 blogholders under blogtree and each blog holder has a set of blogentry.

Blogtree
------Blogholder1
------------Blogentry1
------Blogholder2
------------Blogentry2

Each blog entry has a set of tags.

Now when I click on a tag to get a list of blogs which include that tag, the url I see in the browser is something like
www.my-domain.com/blogtree/blogholder/tag

What can I do to remove the /blogholder from the url, in other words I would like to access the blog with a particular tag with a url like: www.my-domain.com/blogtree/tag