XA support on MySQL 3.0?

I am currently researching for a solution to update two database
resources with identical schema (the two databases are mirror of each
other at all time). After some digging, the way to go is to use XA
tranaction. Currently the MySQL server version that I am using is
3.0.14 and looks like it doesn't have XA support. I am just wondering
if there is any other way do achieve XA transaction with MySQL 3.0.14
with a 3rd party library, or upgrading to MySQL 5.0 is the only way to
go.

And since MySQL 5.0 can act as a resource a resource manager, all i
need to figure out is the transaction manager. I have looked into
AtomikosTranactionsEssentials and it seems to be pretty easy to use.
I see that JOTM is another option. Does anyone have any opinion or
suggestions on transaction manager?

Appreciate it!