>I need to display and store chemical formulas as fields in a database. I would like to be able to display the formula correctly with subscript notation. For example C10H15NO should have the 10 and 15 as subscript

It depends on how and where you are going to use that formula. I store formulas in VFP memo-fields encoded with Corel Ventura tagging. That way the text can be transported to Ventura without change. I also publish in HTML-format and there I have to change (programmatically) all the Ventura codes into HTML-codes. In the future I'll change all the encoding into XML, but XML isn't yet usable in a publishing environment.

Jukka Salminen
Central Hospital of Vaasa
Laboratory of Clinical Chemistry