"As the other forum said, do make menuconfig, well, what do i do in there?"
In there you have to answer tons of questions about your computer hardware, file managing systems, networking options, etc,...
You have to configure the entire basic system software for a new compiling and linking process.
Run this only if your machine is behaving like a wild cat reporting kernel panic, system halted, etc,...
or you do know why it is really necessary. Or you wish try experiments with other configurations.
Well, as for the frames/sec I run a gforce3ti200 and get 3800 fps with AGP 4 though i've not the very latest nvidia
drivers installed. It is very likely your hardware based 3D acceleration doesn't work at all.
If you don't have a VERY expensive multi-CPU motherboard then you don't need SMP (symmetric multi procssing)
Some distro install programs choose an SMP kernel because the internal CPU information does say so despite of the fact
it's a single CPU board.