You can create a Dove Tail tool by entering a negative taper angle. What do you mean by a “slot mill”? The ability to create a User Defined tool is not available in NX2 it was not introduced until NX4. You can create a model of a tool and display it operation and verify. Check the help doc’s for the customizing UG libraries – Tool Assembly part Files. To see an example retrieve the 2.0 dia indexable end mill UGTI0202_019 from the tool library and then verify the tool path – set the tool display to Assembly.
