couple of things if you have not already tried,
In screen resolution you can change the size of text and other items on the desktop(although it might change the sharpness of the image).
There is a small program in windows that is called magnifier that can be used and configured to enlarge portions or the whole screen.
To enlarge browser text ect. you can use Ctrl and scroll wheel instead of Ctrl and +
System Manufacturer/Model Number home built PC. Laptop studio1557 OS windows 7 64 bit and dual boot Pinguyos CPU PC, intel i7 920 2.7ghz, laptop i7 720 Motherboard PC, Asus P6t .laptop probably rubbish from dell Memory PC 6GB, laptop 2GB, me 2 seconds after 6 pints Graphics Card PC Asus eah5870,laptop, ati hd 4580 Monitor(s) Displays Sharp 42" HD TV using HDMI + HDMI to onkyo surround amp Screen Resolution 1920x1080
Keyboard logitek wave Mouse x8 sidewinder PSU OCZ 700w Case antec 902 Cooling antec khuler h20 920 Hard Drives 1x ssd OCZ 60GB, 2x250GB raid0, 2x1TB (storage),2TB Internet Speed dog slow