Inventory Tracking Using Handhelds?

DJ Decepticon asks: "I've recently been given the task to determine the feasibility of tracking several hundred workstations spread out across North America using a handheld device. Requirements include having a barcode and GPS reading and inputing that information into a spreadsheet. Would a handheld device such as Palm or Handspring be able to take on such a task?" Aparently there are PalmPilot's with integrated barcode readers at Symbol.Com, however I don't know about ones that also include GPS. If anyone has used these units before, how difficult would it be to add GPS functionality? Are there other solutions?