Do both of these require you to not have database prefixes like Zen_?

Can anyone fix the SQL files so they work with zen_ I'm almost sure you just add zen_ to the database tables, but I'm not 100% sure what places I should be adding the zen_ prefixes. This would save me a lot of headaches toying around with it till I get it right, and possibly messing up a database.

It would be helpful if someone could fix them to work with zen_ prefixes (maybe post the modified code) since many people sometimes use fantastico to install zen-cart. ( Just a time saver sometimes)

OR... Is there a way to remove prefixes from a MYSQL database I toyed around with it, and searched the net couldn't seem to find a solution.