There several approaches you can take and here is one.

First a quote direct from CGI::save method comment.

#### Method: save
# Write values out to a filehandle in such a way that they can
# be reinitialized by the filehandle form of the new() method
####
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Ok with this knowledge in hand we can start.

1. sub-class CGI (an example of this is CGI::Pretty look at it if you are not sure how to do this)
2. two choices in your new sub-class, overide CGI::save method or creat a new save_db method either way 90% of the code you need is in original save method.
3. Must overide CGI::new to handle case when previous state has been save using your new save_db form.

Hope this helps, good luck

mitd-Made in the Dark
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If you don't believe me I can show you my paper cut scars!'