Belt Parkway West, to I-278 West, to Outerbridge Crossing which puts you on I-287 North, then Route 22 West and from there I am not sure what part of WHS you are in but you should be able to find your way from there.
Just be sure to print directions. I am sure that you can find a set on the Internet very similar to mine, just so that you get the exit numbers to watch out for.
Best of luck!!