Hi Richard,
Regarding the wins file, you can either:
run a pre-job command, "net stop wins", and then post job "net start wins", or de-select the file, since you can always rebuild a WINS database.
I beleive the cpl file is related to the license logging service, same workaround for WINS applies.
Regarding the SQL databases, do you need them backed up, and how big are they? There may be other options.