Home Slow Shutdown - Disabled Tfswctrl.exe

I ran into a Trojan and finally after many attempts to remove, ended up using Microsoft's malicious software removal tool. (Free) and Norton's 2002 with updates. No slowdowns now while on the Web or local use. However It takes forever to shutdown. I went in and changed the normal shutdown time from 20000 to 5000 that seemed to solve it. The next day it slowed down again. I followed the instructions at Microsoft's website called Startup and shutdown trouble shooter. I went to msconfig and followed instructions. I found that if I disabled tfswctrl.exe, It would shut down fast. I read in a posting that the file is a HP file concerning DVD or Cd operations and isn't essential. PS I did run REG Organizer 1.4 in the automatic reg cleaner mode and it found additional problems that it repaired and some bad folders and links that were bad. That didn't solve the shut down length.

So my question is there a way to solve this dilemma, like an update? or can I just keep it from running without effecting my 2 CD/dvd units. both are HP one is Cd write and DVD read and the other is DVD/CD write both.