Toolbox Custom properties

We are using SW toobox 2007. We have the toolbox on a networkdrive and have the option create a new configuration for each newfastener. What I want to do is add "Configuration Specific"properties so that vendor name and vendor number will populate intomy SW BOM. The only problem is that once I insert the propertiesand close my assembly, the property does not stay there since thefasteners are Read Only. Any suggestions or help on the matterwould help.

ChrisSolidworksToolbox