According to the stats linked, the franchise is coming up on win #2,000.
edit: These stats didn't mean much in a vacuum, so I chose to see the Bulls all-time leaders. Deng has over 10,000 points and is like #6. Ben Gordon and Kirk Heinrich(!!!) are 9 & 10th with about 7,000 points. Heinrich is also their all-time leader in 3 pointers. Just odd.