1) bcp out the result of each table from the both servers and make a diff (on Unix, but I suppose that you will find a freeware tool comparing 2 files on NT)
2) it's possible to bcp out (and in, with some restrictions) a table or a view. A view can be a select on several tables
What is the source and what is the target ? if it's 2 ASEs on NT, why don't you simply dump/load the database from a server to an other ?