But a word of caution, even within the T43 series, there are screws in different places. I had two on the front bezel top (near the light), but only three on the bottom of the front bezel.

Everyone should look closely for the black screw head covers so that you don’t overlook a screw. Otherwise you might crack the front bezel (or other plastic part) if you try to remove without a hidden screw still in place.

You can just replace the backlight instead of the whole LCD screen. Replacing the whole screen is lot easier for most people, but will save you lot’s of money if you just replace the backlight.

I agree. Replacing just the backligth lamp will save you lot’s of money but you have to know what you are doing.
If you’ve never done it before you can easily damage the screen. Do it only if you have nothing to lose. You can find a new backlight lamp for about $10-15 on eBay.