Why not just use mysqldump? The data should transfer for the password. After all the hash is just characters. If you really need a module, there is http://drupal.org/project/importexportapi.

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Earnie

It's taking users from a D5 to a D6 site and while a mysql dump would populate the user table -- I assume you mean just the user table -- if there are any other modules hooked into user_save they would be skipped with that approach. I suppose I can test to see if anythings hooked into user_save first. Do you know if in Drupal 6 a user_save affects any tables besides user -- not taking contributed modules into account?

Also, that module you pointed out hasn't been ported to 6 yet.

Best,
Sam