I just revived my 12" PowerBook and I just starting to notice how dim the screen has become. Even my iMac G3's CRT is much brighter than my PB. I really love this thing and don't want to stop using it, so I was thinking about options to fix the screen. What's the cheapest route? Can I replace only the backlight, or do I have to replace the screen? And where is the most reliable place to get a screen changed? If anyone has some experience with this, I'd hugely appreciate it!