When I still lived in NY (moved to NC last summer) I did this ACLS course on-line: it was great! Do everything you can in advance (I've been ACLS-certified since 1982) to be prepared for it, you'll be a step ahead. I was also able to use my education money from work, so it didn't cost me a dime, look into that if your employer provides such a benefit. Good luck!
The BEST ACLS class I have ever taken was with Michele Kunz and Christine Molinari. They run it out of Christine's home which is in West Islip, NY. They also offer PALS if you need that, and they will usually tack on BLS at the end of their ACLS classes if you need it.
To get the class times/locations, you have to email Christine: email@example.com
akinini, do you work anywhere in proximity to a medical center/healthcare facility? Usually the staff continuing ed. dept. has listings of ACLS classes which may be offered in the facility. Also, if you go onto the American Heart Association web-site, click on the CPR link, then "find a class"; you put in your zip code, then a radius in miles from your zip code. Click submit, & the next page will have a drop-down menu for type of class, ie. ACLS, etc. Click on that, & a list of classes will appear, with contact information. As an instructor, I use this site frequently. Good luck!