Web page would be the easiest and then just send the link.

>The department I work has a large form with four tabs that needs to be updated annually. For ease of use, we were hoping that there would be some way to send out a text file or something (the easier to use for each company, the better) so that each company could fill it out and send it back to us electronically. There are logical boxes as well as dates and text boxes in the current form. I would assume that the best way to do this would be to have them fill out something and then for a program to parse through whatever they have filled out and replace the previous data with their new data. Does anyone have any experience and advice on this type of scenario?