Dvdbitset - only needed for making DVD+RW Discs more 'compatable' w/other
computer and stand-alone DVD Players. You may use MSCONFIG to disable
(uncheack it) & re-check if needed.
Hpcdtray (or hpdvdtray) disable using MSCONFIG, use the shortcut from the
destop instead.
Tfscwctrl.exe is for the DLA: Unistall it and remove it from starup.
(see below for full explanation thanks & Kudos to Lindsay Roy for the
following explanation

Background task for Hewlett-Packard???s DLA software (Drive Letter
Assignment). HP???s DLA gets installed when you installed the software that
comes with their CD/DVD Writers. HP???s DLA is packet writing software which
enables you to store data onto CD???s directly from within Windows
applications, without using the actual CD Writing software (much like
Roxio???s DirectCD. Many users have reported shutdown problems caused by
TFSWCTRL "not responding". In all cases, since they were never using the DLA
software and were instead using the CD Writing software to create their CDs,
they simply de-installed HP???s DLA and that solved all their problems with
TFSWCTRL.