There isn't one that I've met. There might even be legal issues (IANAL) about producing one, as it may be MS copyright in some jurisdictions. The generally recommended approach is to understand what you want to do in terms of VBA (recording a macro is often suggested, but that tends to be bad VBA) and then translate it to Perl. If you can give some concrete examples of what it is you are trying to do, I and the other monks may be able to give you pointers to some of the specifics, but automating Excel does mean understanding Excel, and that is generally easier if you attempt to do it on Excel's own terms.

Regards,

John Davies