Editing the skills

Hello,
I'm looking towards some help on editing the time on the skills
and the time recharge, please, help me editing this.
Thank you

It's all in PS_GameDefs.dbo.Skills. Set desired values here for them to take effect in game. Modify Skill.SData for players to see the correct values.

Managed to get that done.
Now, How do i make the NPC i made to sell the stuff i put there
and not the stuff that was there bf?

Example :
My NPC will sells an Etain Potion
but it gives me a lv 1 amulet

How do i fix that?