The PMTS Palm Companion is a series of modular application add-ons that run on hand held (palm top) computers. The systems are highly customized to collect only the data that a company would desire to track in the main PMTS modules. The field tech collects all the data while in the field and then has several options for synchronizing into the main database. The use of the Palm Companion drastically reduces clerical staff data-entry time as well as eliminating entry errors caused by illegible tickets or invoices.