Vcard Fields

Hi,

I'm using postgresql, and enabled the mod_vcard_odbc. I noticed there are 2 tables, one called vcard, and the second, vcard_search.
The vcard table has a column where it stores the vcard as an xml file, while the vcard_search table has some of the parameters from the vcard stored in separated columns.
I would like to know if it's possible to add other fields to the vcard_search table, like telephones numbers, as they appear in the vcard table.

thanks in advanced,