I created a BO based on a view, after I bound my grid to the bo I get a whole bunch of extra columns. Of course I just weed out the ones I dont want but I'm not sure where they came from or if there is something I'm doing to make them show up. Let me know. Thanks. P.S. I've included a screenshot in case I havent been clear.

Thanks for that Mike, I changed the custom type provider to leave off the extra fields.  The fix will be included in the next version.