The problem is that SQL 2000 replication has a lot of features that SQL 7.0 replication didn't have. It is possible to implement the same functionality in simpler ways, and it isn't always possible to represent the SQL 7.0 functionality the same way in SQL 2000 that it had been represented in SQL 7.0.
The short answer is that you can represent both the SQL 7.0 and the SQL 2000 structures in text, but that won't help much for the purposes of comparison because the underlying "plumbing" is so different.
Without knowing exactly what you want, I'm not sure how I can help.
All of the relevant information is in the system tables for replication, such as sysarticles and syspublications on the subscriber, sysreplicationalerts in msdb, etc. You could just pull the whole set of replication related tables if you want everything wholesale, but I suspect that you want to look at both sides in some kind of consistant framework... I can't really help you there, there are too many ways to look at these things.