If I read your question properly, you've already got your computer seeing the various tracks available from your 002 interface.
If so, then in Audition you just need to go to Edit/Preferences/Audio Channel Mapping and, on the drop down menus, tell audition which input from the 002 to put into which available track in a Multitrack session. (If you haven't already done so, you'll need to have set up a Multitrack session with the eight tracks you want, labelled appropriately. If you're likely to do this sort of thing more than once, I'd suggest you set up your inputs and session as a template. The command for that is under File/Export/Session as a Template.