Interactive Map that displays location points, sometimes hundreds of locations from a file

My website uses microsoft IIS server. I need something that loads from xml, json, or straight from sql server if i can get it. It needs to be something i can easily convert to a pictures to insert into pdfs. And if all the points are very close together that they show the streets clearly. I need the map to printable. The locations points would be made on the fly from me, then when the web page is opened it would display those points. Looking for a very attractive, professional map.