There are several things that you can do.
1.) Ask the Ruby foundation to help you about this endeavour.
2.) Ask several big companies to help and sponsor your event( MS, Sun, IBM)
3.) Ask the person directly by sending him an invite email.
4.) Ask worlwide group to help you in bringing top notch people to your conference (INETA, Open Source Foundation).
usually yung mga ganitong types ng event eh shinosholder ng big companies specilly if you give them a spot to showcase their products or give them a chance to send their own Tech Evangelist.
Btw, Nice idea Adaline!
Convert limitations to great expectations... You are the creative force of your life...
Adaline:Thanks! it will be sponsord by our company.. hopefully by march we can make this possible. di pa rin namin kasi maconfirm kung kelan namin pwedeng mapapunta dito si david eh. .pero meron na bang organization ang mga programmers dito sa pinas?
Adaline:ohh the inventor of Java.. well.. baka mahirap na syang makausap unlike si david.. he actually said that he is interested in visiting the phils.. as per my boss ha..sila kasi ang nag usap eh.. sabi kasi RoR daw will be the next PHP.. asteeg di ba.. kaya yun na encourage na invite dito sana matuloy we're very excited about this project!thanks!