Here’s the thing, I want to know if the spanish version has a bug or if in fact, Jaheira screams like that in english. EVERY time Jaheira gets hit she says: “Drow, acaso nos vas a entretener con otra de tus historias, sin dudas no pueden ser mas que un atajo de mentiras, no acabo de entender porque te sigues molestando”… that’s really annoying, long and boring thing to say just because she gets hit…
You may wonder what in the heavens that means, I could be something like this: “Drow, you will maybe spend time with another of your histories, without doubts they cannot be but a bunch of lies, I just don’t understand why you keep yourself bothering” Tell me the my version is wrong! why she can’t just say “ouch” or something?
Is anyway to change this?

Your version is wrong. I don't remember what she says in the American version, but it's not that.

two files have the name of the other aparently.

Ok, two wrong files, and they are?
I really want to change that because is very annoynig to hear Jaheira complains that way everytime she gets hit.
Thank you for the information.

Are both dialog.tlk and dialogf.tlk in your root directory?

Yes they are.

Does it display that message in the text window whenever she gets hit, or is that simply the sound that plays and it says "ouch" or somesuch in the window?

There's no text display in text window. She just say that.
Let me tell you, I used chitin (don't remember the name correctly) tool, I found the sound and what's the name, so I opened the dialog file with wordpad, changed the part where I guess the sound was triggered only to screw the game, when I wanted to play I got this message error, the thing is that I have to reinstall the game, also, I had to install all the mods and the patch for ToB (Kelsey, Valen, Tashia, Ascencion, Easy, Redemption, Nalia's romance, improved Shadow thieves stronghold,) but I forgot the order I have to install them, I read all the files of every mod but some of them don't say anything about order, just that they are all compatible, after that, I was playing with Kelsey, now, every time I select him the text "gets funky" like the readme says, so I did what I supposed to do (select him+press K) but nothing really happened. Anyway, I may be out of line here, stil, I want to know how to fix Jaheira bug because I stil playing with her and I plan to play again.
Thank you for the effort you're making trying to help me.

Okay.
Kelsey does work. Select him (as in when he has that bright green circle under him) and press K. If that doesn't work, fire him then tell him to stay.
Turn subtitles on at options and see what Jaheira says.

Well, I already try the thing with Kelsey, fired, get him back, etc; doesn't work, he works perfectly, is just now his name is Baalspawn Powers, and he doesn't talk anymore.
About Jaheira, I got subtitles and everything related on (I like to watch what they say, do, etc), the text when she complains doesn't exist, while other's NPC displays all what they say.
I guess maybe is a spanish version's bug.

Sydax, the readmes don't say anything about install order because the install order does not matter. Those are all WeiDU mods. Install them in whatever order you want.

Turn on display subtitles (or similar) so that you can see their hit displays in the text window.

Thank you guys, I fixed Jaheira's "ouching" using Item Checker tool, and for Kelsey, I just started a new game and he worked fine.
Thank you for your time and understanding.