I like both suggestions and I believe it comes down to the matter of comfort. What tool are you most comfortable with?
Are you planning to do this a number of times ? If so, then SmartConnect might be the way to go - build the integration right to the data.
If this is a one time - list of vendors in excel ( example ) then IM is quick and easy.
But both will work, I use IM more than anything else - comfort is main reason.
Hope this helps.