My company does not use the SW part number for their BOM.(dont ask Y, I don't know)

In toolbox i have filled out the property "Part Number" and "Description"  thru excell and imported it back in.  I can see the "Part Number" gets filled into the ("Part number displayed when used in a bill of materials" "User Specified" under configuration properties.

Because we use a custom property for our part number, these toolbox part numbers come in blank on our BOM. I don't want to change any files we have, because that would be 10's of thousands.  I don't want to change our current BOM. Our entire file system, purchasing, ect. uses the custom property to pull info from.

So what i want to do is, have our custom property for "part number" and "description", point to the toolbox "part number" and "description".  Something like ("CM_Number"=SW_Part Number")  But, i don't know what the property name for toolbox "part number" and "description" is.  Does anyone know what properties these are?.

I'm sure the BOM has to pull it somehow with a property/varible, right?  So under the toolbox part, under configuration properties, bill of materials options, part number displayed when used in a bill of material,  How do i extract that info into our custom property?

And I don't even know where the toolbox description's go!

This is on SW2009!

One more thing.  We don't want any user input when inserting toolbox componets, other then size and length.  I have tried working with adding custom properties in toolbox, and they are too limited.  If this was SW2010, i could accomplish this task much easier.  But are company just upgraded from SW2006 to SW2009, a couple months ago, so I dont see us upgrading again anytime soon.

Thanks for any help.  This is driving me crazy!!!