I have my resolution set at 1680 X 1050 now, but when I try 2880 X 1880 , text on menu bar and bookmark bar are SO SMALL that I cannot ever read them. Is there a way to make text bigger and keep 2880 X 1880
There's no built in systemwide means of adjusting the font scaling, short of running at a lower than native Resolution. In general, OS X is a fairly poor choice for everyday use at a distance of 10 feet from the screen. That said, you have a few options:
You can increase font sizes on an app by app basis. The main one you'll be concerned with, it seems, is Safari, where you can adjust the default display fonts for web pages under Preferences->Appearance, and on any given page, you can adjust the displayed fonts on any given page you are viewing with ⌘+.
You can also make use of the built in 'Zoom' feature in OS X. To enable this, under System Preferences, go to Universal Access and turn on 'Zoom'. This will enable you to zoom in on a portion of your screen at greatly increased magnification with a keyboard shortcut. Some people love this, but I find it slightly disorienting.
You might also want to investigate whether one of the systemwide 'theming' apps will work for you. The only one I know to work currently with 10.6 is ThemePark. You can probably find more info to assist you in taking this approach over at the MacThemes Forums, but be advised that this sort of 'UI skinning' tends to be frowned on by Apple and break frequently. It's something of a high maintenance option.
I have my resolution set at 1680 X 1050 now, but when I try 2880 X 1880 , text on menu bar and bookmark bar are SO SMALL that I cannot ever read them. Is there a way to make text bigger and keep 2880 X 1880