Technically, no. However Access 2003 does allow you to create custom groups.
These customized groups will show up in the groups section of the database
window. To add an object (form, table, query, ...) to a group, right click
on that object, then select "Add to Group" and either select a listed group
or create a new one.
Your objects will still show up in the tables, queries, ... object folders,
but they will also show up in your custom groups.
HTH
Dale