photography questions

[evilbert]

Hello again all, I now have my D70 with the kit 18-70 lense and i have had a bash taking some shots, but i have a few questions about setups.

the place i was taking shots had very bad artificial lighting which the camera had real trouble picking up even with 1600 iso low F and the lowest shutter speed i could get away with.

i ended up having to use a flash for the whole evening for all the pics i took to get a quick enough shutter speed.

1/ the only settings i'm adjusting are the iso, shutter speed and F value, are there any other important settings that i should be adjusting to get non flash photos?

2/ should you be able to get away without a flash in this situation or is the flash the only way to get high speed pics in bad light?

below is one of the pics i took as an example of what i was getting with the flash.



Sorry if these sound like obvious questions and thanks in advance