Currently in Creo Parametric 2, a user cannot change the ptc_common_name from a table cell, like can be done with any other parameter. The ptc_common_name is the Description equivalent in Windchill. It is so poorly integrated that it does not show up by default in the parameter list in the model tree configurator in Creo P2. Users have to type it in by hand in order to even see it.
To change the ptc_common_name requires that the user go into Windchill and rename each item one-by-one in order to fill out a BOM in a drawing in Creo P2.
PTC, please allow renaming of ptc_common_name directly from Creo Parametric.