After upgrading BITS to version 2.0 you may find you keep
getting BITS errors in the event log saying that it doesn't recognize the
job list and it's going to clear it.

It will do this everytime the BITS service is started.

Solution:

extract bitsadmin.exe from \Support\tools\support.cab from the XP CD, then
bitsadmin /create [yourjobnamehere]
bitsadmin /reset

Creating a job updates the job list to a readable format.