Questions about replicating different versions

Hello,
I have a mysql database that is a slightly modified version of 4.1 from a vendor. They have no plans of moving to version 5.

So we were interested in being able to replicate this 4.1 database into a 5 database.
The reason why is because we'd like to be able to take advantage of stored procedures in 5.

We're basically looking to make a search index on top of the data that works in a certain way, but which is built up by stored procedures.

My question is two-fold:
1. Is it possible to replicate a v4.1 server to v5.0 and above? 2. and if so, is it possible that when the replications happens, say an insert is performed in a certain table and that replicates across, that triggers in the v5 database can kick off stored procedures? (Is it even possible to make stored procedures and triggers on a replicated database in 5?)

Am I crazy? hehe
thanks,
mark

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