Bonjour Service-Error Msg on iTunes Instalation on Windows 7

Hi can you help me, I can not install I tunes on my Window 7-It keep giving me an error msg saying:

service 'bonjour service' could not be stopped verify you have sufficient privileges to stop system services

I follow the step given by b noir on Oct 10th 2010, like below:

service 'bonjour service' could not be stopped verify you have sufficient privileges to stop system services

That occasionally happens if the BonJour Service gets jammed in a "stopping" state.

In your Start Menu right-click "My Computer" (if you've got XP) or "Computer" (if you've got Vista or 7), and select "Manage".

Expand "Services & Applications"

Open "Services"

Maximise the window to better see what's going on.

What is showing up next to your BonJour Service under "Status" and "Startup Type"? (For example, mine says "Started" and "Automatic".)

Under Start up it says DISABLE

Service Status STOPPED

At the end when I click apply I got an error msg saying:

"The specific service have been marked for deletion"

And keep going back on and on like no response of my click.

Please help me with this matter, Thank you