Hi!
This is a bit difficult as the bar codes for all frieght companies do differs.
Symbol do offers solutions to this but may be costly. You can seek them out or you can do a search for companies dealing in mobile computing or wireless solutions on a yahoo search engine and you will be able to find a few.
Currently as I know of, there are no shareware to this solution.
On the other hand, is your handheld scanner a 2D scanner? There are some industry standards for bar codes and you want to know more of it. May need to hunt.
Check with Symbol or intermec or you can go to www.mobileinfo.com to find out more.
I am dealing in this solution also but more of a customisable solution with the architecture in place. DHL and TNT ismy company clients. Check me out at www.newspage.com.sg
Regards,
Sagacious (Robin)