As far as GLCD as concern, why Melabs don't include them in the built-in feature?

Well, there's a load of Different Graphic controller, there's no official standard one, but some more popular model. KS0108 is one of them. I agree , they should consider to include it.

There's quite a lot of pre-canned example for PBP, i think the best one to start is the one from Electronic Workbench website
http://www.compsys1.com/workbench/On...ontroller.html
and the code
http://www.compsys1.com/support/PBP_Files/glipic/

Swordfish is not a bad compiler, but only for 18Fs. There's few other compiler who have GLCD built-in feature as well. It's really up to you to decide... do you want to learn something, or you just want to do something...