Hi I am brand new to modding Kotor and I was just wondering if this would be possible, would it be possible to make up brand new classes to start out with? Instead of having just 3 classes to choose from. Such as in Kotor 2 you could choose to start out in soldier class and such? And if it is possible, how would you do it?

you CAN add new classes, but only non-spellcasting ones. it's a hard-coded thing as far as I know, stupid Obsidian.

about changing starting class, I don't know. You should consider on whether the system has a class limit, like 3 in NWN.