2
Take a look at the DB and the forms that use the DB fields. You'll need to change the input form labels to reflect the new data fields. Then you may either make certain that the data types in any pre-exisiting db fields are correct for the data you want to store. Or you'll need to make new DB fields to add your info to the DB---
From that point forward you'll be incomatible with every upcoming release of xoops... so upgrading will not work unless you reapply your changes; you'll be on your own.
Pax vobiscum,
...mark
may the road rise to meet your feet!
http://treemagic.org