Well, I have finished that modification. I have successfully added my own character to the party, and fixed the dialogue so as to fit him into the storyline and replace HK47.
I've also created a character for a friend of mine as well.
Presently, I will not add my modifications to any download page to share them , for reasons of my own. (Yet that may change in time).
I do, however, thank you , Fair Strides, and Fallen Guardian, for your great advice!
and indeed everyone whom created tutorials on this forum, and indeed those creators of the software tools used to modify.
Thank you all, God Bless you all and Peace be with you all.
May The Force Be With You.