Search based on Insertion time

System

I am trying to search for assets that fall under certain date period,for example I have to search for assets between from date(10/3/2006) to to date(10/5/2006). Problem here is how do I set Metadata Type as DateTime in Search criteria.

Also wanted to know how to create a search constraint when MBBooleanOperator is set to MBBooleanOperator.AND as I have to search between two dates.

canybody help!!!

Thanks