VPView and notepad would be sufficient in that case.

You will find VPView32 (and version 2.0 of it) with a bunch of other possibly useful tools from this URL:
http://www.descent-network.com/descman/Download the tools you want, install them, use VPView to extract ship/weapon tables from VP files. Edit them in Notepad, save them in Freespace\data\tables and they should work (provided that you don't b0rk the tables).
I would still get FreeSpace 2 with latest SCP build (3.6.9), graphichs updates and also Freespace Port, which allows you to play the Freespace 1 campaign in the new game engine with new graphics.
