Thank you
I use linux and ended up doing it in C using this method Linux Howtos: C/C++ -> Create a % gauge like the one at the bottom of this site (part3).
So its up and running, the code still need some finetuning both on the pc and the arduino side.
I also found out that I had to set a maximum rate for the movement of needles, else its annoying to look at them waving forth and back.