control servo

hi everybody im a complete beginner so please be patient with me i want to control a lynx motion brat so THE question is

 

how can i control 3 servo (moving at the same time)by pressing only one key on my computer?

 

i dont care how (bluetooth ssc-332)i just want help and your opinion

http://www.google.ca/#hl=en&s

http://www.google.ca/#hl=en&source=hp&biw=1366&bih=653&q=lynxmotion+bluetooth+tutorial&aq=f&aqi=&aql=&oq=&gs_rfai=&fp=4aeaa14e93ada747