IPod Nano does not appear in iTunes or My Computer

Question

I have had my Nano for around a year with no problems but since I installed iTunes 7x, my computer has had issues with synchronising my iPod. At first it was that the iPod would appear in Windows explorer but not iTunes. Now it does not appear in either, I simply get the red flashing "Do not disconnect" sign on my iPod screen and nothing happens in windows or iTunes.
I have followed every instruction this site has thus far given me and found one set of instructions that looked promising - http://docs.info.apple.com/article.html?artnum=304434 - however once i reached the crutial stage of actually switching the 'terminal services' from disabled to manual, I get an error message on my computer "Error 5: Access denied" and nothing on the site gives any indication of what to do in such an eventuality.
Can someone please let me know if there is another way of getting this thing to synch or perhaps some way of making the computer grant me access to this elusive "terminal services" file??
Anything would be greatly appreciated
Thanks! Adam

Answer 1

- however once i reached the crutial stage of
actually switching the 'terminal services' from
disabled to manual, I get an error message on my
computer "Error 5: Access denied" and nothing on the
site gives any indication of what to do in such an
eventuality.
Do you have an administrator account on your computer? If you are not logged in as administrator, do so before attempting to change the to manual. However, I myself am having the same problems with my own ipod..