This problem is usually caused by the font smoothing option in Windows 2000 and XP.
To turn this option off, right click on an empty area of your desktop and go to properties.
In Windows 2000, go to the effects tab and click off "Smooth edges of screen fonts".
In Windows XP, go to the "Appearance" tab. Click on the "Effects" button. There check off "Use the following method to smooth edges of screen fonts".
Autodesk Knowledge Base:
ID: TS74466 - Text is very faint in Multiline Text Editor
ID: TS73209 - Text in MText dialog box is very light
ID: TS72202 - Text is faded in Multiline Text Editor
MText problem - ghosted text
Cant See Mtext in Editor
mtext ghosting resolved
Text fades in mtext box using a LCD monitor
When I modify or create MText, the text is not very visible ie Is very faint