Multisite without .htaccess and mod_rewrite possible?

Hello,

with permalinks there is a workaround that I found to make them work without mod_rewrite when you simply add /index.php/ in front of your tags like this example: /index.php/%year%/%monthnum%/%day%/%postname%/

Is there also a workaround or plugin available that gives you the ability to use the multisite feature of WP 3.0.1 without having the ability to create and use a .htaccess file (as this seems not to be available with my provider only at higher and more expansive accounts)

Maybe with more administrative things to do like creating sub/folders by hand, or configuring sub domains or domains directing to specific folders etc.?

I would appreciate any hints in regards to this…