www.kidology.org is one of my favorite web sites - you have to subscribe to get all of the resources available, but it is pretty reasonable.

I've also gone to www.jamiedoyle.com - Jamie is a children's pastor in our district, and he has set up a web site with articles by himself and other children's pastors/workers, as well as a page with links to all sorts of helpful resources.

As far as curriculum goes, we use Gospel Publishing House for our Sunday School.  I've been using a curriculum called "Noah's Park," by David C. Cook publishing for children's church.  We don't have enough $$ for a really good Wednesday night curriculum, so DH and I are sort of inventing our own...I'll post more details on that when I have them written out .

Hope that helps!!