Sure, it is our fire reports for the State of Montana. I usually set the ID to Firename, and veiw all fields. It opened fine in build 900, but not in build 1200. I am hoping the build 1500 is much more stable, and works alongside ArcDesktop. I had to uninstall it on my desktop as it affected ArcView 9.3. I now have build 900 again and this file will open fine, I have build 1200 on a laptop, and ArcGIS Explorer crashes everytime I try to load this. So, here is the CSV file. We can't use build 1200 until the other bugs get with ArcDesktop get resolved. Thanks for getting back to me.