i've just downloaded the game and want to create a human/sorcerer
since sorcerer's main attribute is charisma and persuade highly related to it
but persuade is not a class skill, so takes 2 point to raise one
ok cutting the chatter :), what skills must a sorcerer have?
all help will be much appreciated
Spellcraft and concentration are the only "must-have" skills for the sorcerer, everything else is up to your discretion and there's no need to max it out. Remember that persuade is a cross-class skill for the vast majority of characters, so the bar for most persuade checks is usually set quite low. The penalty hurts, but it's still a great skill to have for most campaigns.
Most important thing with the Sorcerer is maxing out your charisma and choosing a good spell selection; everything else is small potatoes.
For spells, here are some suggestions:
Color Spray is awesome
against weak enemies, but gets progressively weaker as the game goes on. Retrain it later for the Grease spell, which is less powerful but more reliable. Make sure you learn magic missile eventually, but it's not needed early. Finally, "Protection for Alignment" is a hidden gem, since it makes you immune to mind-affecting spells from evil enemies, which are some of the nastiest status effects. On a level 1 spell, that's a gimme.
For there on, here are some decent selections:
2 - Cloud of Bewilderment (or Web), Invisibility, Mirror Image
3 - Haste, Dispel Magic, Stinking Cloud
4 - Evard's Black Tentacles, Stoneskin, Improved Invisibility
5 - lesser mind blank
6 - Isaac's Greater Missile Swarm (IGMS)
7 - Energy Immunity
8 - Premonition
It's a good idea to have a varied selection of damage-dealing spells in NWN1, but there's not a huge difference between them. Try to pick no more than one damage-dealing spell at any spell level, and keep your elemental types varied so that if you run into a monster with immunities it doesn't leave you helpless.
Happy Hunting :-)