Looks here:
http://www.freerepublic.com/focus/f-news/1007776/posts
MSM totally disinterested in Wilson/Kerry connections. But the Bostaon Herald bothered to ask. Makes it around May 2003.
Between the cocktail circuit of Washington DC and their press and Democrat contacts, I find it hard to believe Wilson was picked up by Kerry without having spent a fair amount of time and effort vetting him and using his knowledge prior to his attaching himself to the Kerry campaign. Then there's the dissection of the link between Wilson and Cooper which provided information nobody else had at an unusual time. Add in the connections between Hillary with Matt Cooper and his wife, who works for Hillary. Add in the Schumer and Wilson press event, and it all gets stranger and stranger.