Most state agencies offering assistance to first time home buyers have a list of lenders. You will find a link to the NY agency at Your-Road-Home.com. Also the article, Consultation Interviewing Loan Officers, will serve you well.
Another thought. You want pre approval not pre qual. Pre approval indicates they have verified your income and looked over your credit. The resulting letter will serve you better with the seller when negotiating. You will find an article at Your Road Home.
Best of Luck, Stephen Webber