A quid is a slang term for the British pound. So currently, 1000 quid (or 1000 pounds) is about $1500 US dollars.
Sidebar is a theme feature introduced with Version 2.2. It's basically a vertical column provided by a theme for displaying information other than the main content of the web page. Themes usually provide at least one sidebar at the left or right of the content.
File: sidebar.exe. Security Rating: The file implements the Windows Sidebar feature of Windows Desktop; it is found in the folder C:\Program Files\Windows Sidebar\. It is part of Windows gadgets and is associated with Windows Vista. Get more detailed information about sidebar.exe and all other running background processes with Security Task Manager.