Are these your own forms or one already printed?
Either way you will need some form of template of the form in order to be able to do as you request. If you have a standard layout and intend to fill multiples of the same form, you can often get templates from the supplier of the form (e.g. as you sign yourself as Dr, you may be aware that you can get templates for NHS prescription forms and all other NHS paperwork included with the software used in general practice).
The essential thing is that the computer must know the layout and design of the form before there is any hope of it filling the form in. If it's your own form, any W/P program is capable of making a template. If it's a commercial form, try to get a template from the supplier OR design one yourself with a W/P progam.
Obviously, this is only worthwhile if you have a number of identical forms to fill in (as per my example of an NHS prescription).