can you *copy* a recordset?

in addition to the main RecordSet.as file (about 18k) in Flash\en\First Run\Include, there is a RecordSet.as in Flash\en\First Run\Include\Classes.

I assume I'd need to declare the new method there, no?

Also, if i change *my* RecordSet.as files, will my flash movies still work for everyone else of would I be declaring something the flash player cannot handle?

ok since i'm not getting any help, i figure I'll post some of my efforts to hopefully encourage some smart person to help me here....

I googled and googled and found this:
Working with Recordsets

Tantalizing hints there. the RecordSet.filter() function is supposed to return a *copy* of a Recordset.

BUT, there are problems with that as described here:

http://www.flashant.org/index.php?p=21&more=1&c=1

Apparently the filter() function retains references to the original object. SHAME on Macromedia!

At any rate, it appears as though I can add a RecordSet.copy() method to the RecordSet object itself by editing the RecordSet.as files in the Macromedia install directory. I don't know is this will work, and I'm wary of doing something that would not work on everybody's flash player, but I was thinking I could add this to the RecordSet.as file right after the filter() prototype.

Does anyone know if that will work??