[HyperDB] Remapping table names?

[Mark L Middleton]

Hello,

I'm trying to use a separate database for the wp_users table, and have 
that table be called 'users' instead of 'wp_users'.

Using the separate database is working fine, I'm just adding the table 
to the dataset defined for the second database. But is it possible to 
remap table names or set different table prefixes for different 
databases using hyperdb?

Thank you for any help you can provide,
Mark Middleton