Intelligent Weapon Mod

Hey everyone! I'm new to BG, but I'm fairly familiar with the Forgotten Realms. I hope to learn how to mod the Infinity Engine and create a sentient weapon somewhat similar to Khazid'hea from R.A Salvatore's novels. To this end, I have a few questions to ask you all. :)

-How would you suggest I get myself into modding?

-How difficult would it be for me to create a talking weapon?

-Do you have any suggestions for a suitable place to introduce the weapon in BG 1? (please keep spoilers to a minimum, I'm hoping to run through BG: EE as blind as possible)

-How difficult would it be for me to import progress with the blade into BG 2?

Basically, my plan is to make a living weapon obsessed with justice (sick of the 'cursed weapon thirsting for murder' stereotype, although I acknowledge that my concept is little better) with three quests attached to it. The first quest centers around obtaining the blade, the second about befriending/subjugating the blade and the final quest will focus on hunting down the weapon's creator.

Final question: Is this a concept that anyone would actually like to see in the game?

Thank you very, very much to anyone who can help me. :)