The official site has a History page that starts with this curious paragraph:-
The history of the FIDE World Cup began in 2000 when the World Chess Federation (FIDE) organized its first tournament having this name, and in 5 years it got its present format with 128 strongest international chess players competing by the knock-out system.
According to my records, the first FIDE World Cup was 2005 Khanty-Mansiysk, won by GM Aronian. That Fide.com 'History' page gives no more details about the so-called '2000 FIDE World Cup'. The first event with details is given as:-
Date: 9-22 October 2002
Place: Hyderabad, India
Winner: Viswanathan Anand
The second event with details is 2005 Khanty-Mansiysk, followed by World Cups every two years. I don't recall the 2002 Hyderabad tournament and will have to research it.