ok. times up. deephaven seems to conclude it in clearest manner, there's no direct way. i guess 2 wires rca -> 15 pins vga is impossible without extra components (chip?). i googled i saw vga->rca is possible, but i guess not the other way around. the projector is high above as Psi predicted, few tens feet overhead, the wire goes inside the ceiling and popped out another tens feet away to the back of hall, vga only. @Joshua: thats not an option, this is a "live" show, storage is even not mandatory. i guess i'll go as amspire's suggested, that is my backup plan, ie rca->usb convertor->netbook->vga. i have the device. but it kinda inefficient, its like going round the longer road to go to your neighboor house just next to you. thanks everybody for suggestions, i'll go setting up my netbook and video convertor tonight to bring tomorrow.