[Plugin: WordPress MU Sitewide Tags Pages] Maximum number of posts – change 5000 to unlimited?

I would like to change the maximum number of posts on the tag blog from 5000 to unlimited. I’m not concerned about the database size of the blog, if I have to upgrade my hosting to cope, then that’s what I’ll do. Does anyone know how to do this? I don’t want to enter “0” and find all the posts get deleted!!

http://wordpress.org/extend/plugins/wordpress-mu-sitewide-tags/