Blindman is quite correct, without an ORDER BY clause this is dangerous in any SQL dialect.
SQL-2000 doesn't have a good way to implement the functionality of MySQL's LIMIT clause. Until a new version of SQL provides a better solution, the best answer I can give you is that your code needs to provide the paging functionality.
The best way that I know to provide paging functionality is to use ORDER BY with a "rowset key" within your data and the TOP N syntax to limit the number of rows returned by a SELECT statement. Keep track of the rowset key of the last row returned, and use that as the seed for the next iteration (page) of your SELECT.