Customer already has an 11,000 word file set up to create a custom MS Word dictionary. These are words that are typically misspelled in Word. Customer wants visitors to be able to purchase the file online and then have it downloadable and installable directly into MS Word on a user's computer (PC's only). After purchase a software license key will be delivered to the purchaser's email address. Purchaser must verify the license key with the server before final download and install can occur. Automatic installation in MS Word's custom dictionary w/o purchaser intervention once the file has been downloaded. Once installed, remove the opportunity to extract the custom dictionary from MS Word.
I am not sure if this is a possibility. Please provide feedback and suggestions. The main job requirements are to allow purchase of the file online using Paypal, customer must verify the purchase with a license key sent via email and purchaser must then verify the purchase with the server. Lastly, the file's integrity and security must be maintained by eliminating the possibility for other users to steal the data or word file as a whole once it reaches the purchaser's computer.