Font Change (1 Viewer)

I have an older program that has a lot of entry forms. All of the forms have several entry fields.
A slightly visually impaired person is being asked to do entry in this program and is having problems with size of the font used in the entry fields (too small and not dark enough).
Is there a way to universally modify the font in a form. I may need to make it bigger or bold. The font in the captions doesn't need to be modified only the actual entry field will need to be changed.

Thanks for your help, GGuy

An easy way would be to use the <Edit> <Select All> route but it sounds like you will have to be more specific than this.
Only way I know is to work through each form, highlight all the textboxes (using shift key and mouse click) and then making changes.
Its boring and tedious but it does the job.
There may be some fancy code you could use and if anyone knows it I would love to have a look too!!!
All best wishes