|Sorry, I've been poorly but ok now.|
Windows Vista has a built-in anti-spyware program called 'Windows Defender', you can use that to disable startup items.
There should be a gray castle icon in the system tray where the time is shown on far right at the bottom. Double-click that icon.
If no castle icon there, click the 'Start' globe at bottom left, then 'All Programs' then click 'Windows Defender' in the programs list.
In the 'Windows Defender' window, click 'Tools', then 'Software Explorer'.
This presents you with a list of all the items that start with Windows in the left pane, listed by manufacturer of the software item.
Highlight the item under 'Hewlett Packard' which refers to ESAdvREMINtegrator.exe, or Hewlett Packard Extended Service Contract Reminder.
Now click 'Disable' at bottom right.
Close the Windows Defender window.
Restart your PC.
I suggested downloading something to do the same job because it's easier to use than Windows Defender for some people, but I appreciate that downloading stuff can also be a daunting task if you've never done it before.
Good luck and I hope we can help you again.