adjusting framerate/reducing lag?

[zwitter]

i played elder scrolls of morrowind and had a similar problem--after a while of playing, everything is slow, the computer barely registers a mouseclick, i have to press long hard and click more than once.

i helped this problem on the other game by downloading something that adjusted the framerate.....does anyone know how i could do that for ragnarok?

or any ideas on why its slowing down? its clearly my computer, not the internet connection.

running windows xp pro, pentium M 1600mhz, 589 mhz 2 GB ram.

thanks!