I also have a 15" monitor (Samsung SyncMaster 570V TFT) and I have absolutely no problem reading the text in the game. My monitor is positioned about 24" from my eyes (both have had cataract surgery on them so I hardly have "perfect" vision), and I'm running V4 on Mac OS 10.3.9. Maybe it's a Windows display problem or there's something wrong with your monitor's settings?