Best way is to simply text the agency(ies) you want to join when you get to NYC, and introduce yourself, say you are willing to do screening, and the girl you want to see. Go from there. It's not rocket surgery.

I was up there a couple weeks ago and texted a few agencies, one of them got back to me but it was like a 60 dollar cab ride from Brooklyn and I was tired from drinking at a party so I didn't follow through. Next time I will. But point being, text a few agencies not just one. One or more will get back with you. Just think ahead about transportation. I wasn't even considering the subway that day but you might want to, not sure where you'll be staying. Oh, there's also an agency in northern New Jersey that opened up, not sure if it's the same people that were doing DAC but it might be. There's like 4-5 kgirl agencies and at least 2-3 Jgirl/Cgirl agencies that sometimes get some really exotic mixes.

Shit, one more thing, go to Flushing in Queens at least once and see if you like it haha. I thought the scene was interesting even though it probably wouldn't be my mainstay, personally.

Good luck and have fun!!!