size to SIZE

I'm new to W7 and WLM. The learning curve seems to be smoothing out nicely but there is one bump I have not been able to smooth. The screen size, or I'm guessing it's a screen size thing, the screen size in WLM is such that it's as if the screen is at the end of the hall - kinda like this screen size here. A few years ago it would not have been a big deal but every year type size becomes a bit more important. Whenever I'm creating a new message it's a simple matter to increase the type size to 16.  I can read that easy enough to get the message completed efficiently. It's reading mail or replying to a plain text message that really messes with my efficiency because it's so difficult for these tired old eyes to stay squinted so long. If I could simply increase the screen size for WLM only it would be a big help. Any ideas, suggestions, or comments any may have to offer about making life a bit easier for this wore out old GPa wil be greatly appreciated. Thanks, K.