due to maintenance reason i converted a wordpress Mu site to drupal.
or we can say combined the 2 site or import a wordpress Mu site into a drupal site.

programs that needed for convertion:
1. drupal 4.7
2. wp2drupal
you can find it on the author site:
http://www.borber.com/en/projects/wp2drupal
3. phpmyadmin

convert steps:
1. make a drupal 4.6 site(server running php v4 or v5 are ok)
2. install the wp2drupal module, please make sure the requied module for wp2drupal are enabled(blog module and path module)
3. from the administrate menue, click the wp2drupal menu, specify the setting then run the import.
3.1 if you are running wordpress, its very easy to complete the import.
3.2 if you are running wordpress Mu, the you need to import user by user.
you need run wp2drupal once for every wordpress Mu blog user.
every time, please specify a user prefix id such as wp_1_;wp_2_;wp_3_....
also run phpmyadmin once after each imported user to correct the author infor of current imported blogs. because the default author of imported blogs is Anonymous.
for example:
replace username
with username_of_actual_blog_item
where username_of_actual_blog_item=anonymouse

mm... hardwork for a large site.

if you need run convertion on a drupal 5 site.
there is a wp2drupal for drupal 5 can be found at
http://dojotoolkit.org/~ktiedt/wp2drupal5.tar.gz