If you go to BOL and search on "compatibility" there is a whole topic on 6.5 to 2000 issues. In addition to SQL changes, there were several changes to system tables.

PF

>Hello all.
>We are migrating from SQL6.5 to SQL2000 and it looks like we are encountering some trigger issues.
>
>Triggers that worked well on our SQL6.5 seems to be giving us problems on SQL2000.
>
>Has anyone else had this type of problems in SQL2000?
>
>Thanks.