Graphic tablet problems

Photoshop doesnt seem to be able to distinguish between pressures. if i want to draw a simple black line, the first time i draw, it'll come out light grey, no matter how hard i press the "pen" on the tablet. it will only become black after i've redrawn over the first shape over and over again about 5-6 times, which isnt very normal.
i was wondering if anyone could tell me :
1) where to find all the options related to the tablet in photoshop CS
2) worst case scenario, a complete options-reset, which i was told is reached when pressing "alt, ctrl" and something else, but cant remember.

cheers,
K

I'm not an expert but this could be due to several reasons (at least these several come to my mind):
1) It could be a simple matter of the layer you're drawing on having an opacity value of less than 100% just select that layer in the layers tab and move the little slider back to 100%
2)The tool you're using might have an opacity value of less than 100%. The Opacity of the tool you're drawing (or erasing) with is displayed a little lower than Photoshop's menus.
3)The combination you're trying to remember is crl+alt+shift
4)You can just search for 'tablet' in Photoshop's help search.

awesome !! thnx. It was the tool's opacity

Cheers,
K