I'm a Windows user but I want to use the Lucida Grande font in Notepad++ and Eclipse IDE.
I didn't find that font listed for Notepad++ when I tried to change the font in the style configurator.
Does anyone know any tweaks to make this happen?
The reason you can't find Lucida Grande among your installed fonts is that it doesn't come with Windows. If you want to use it, you have several options:
Buy the font, as noted in RedGrittyBrick's answer The font doesn't seem to be available for purchase.
You can use Lucida Sans Unicode instead, which does come with Windows and is almost identical to Lucida Grande.
A quick search online for "lucida grande" provides a number of places where you can just download it. I won't list them since I'm not sure about their legality, plus it's not like they're hard to find.