Prefilled URL using db field data?

[ludachris]

I'm modifying vbaLinks and need to create a pre-filled Google Maps URL for each listing in the directory. Each listing in the db will have a street address field, city field, state field and zip code field tied to it. I need to add those fields to a URL string and swap the spaces in each field with a + symbol so that it will automatically create a link to a Google Map. I don't know exactly which file I'd need to modify in the script or how to write the code. Any help would be greatly appreciated.