I'm confused by this question. It may just be the way you worded it. No employer is going to give you a job simply BECAUSE you are disabled. That may not be what you are intending to ask. I'm hoping what you meant to ask is "What can I tell them to ensure that if they find me to be a candidate for the job, they will not exclude me from it on the basis of my disability?" Is that what you meant?

Technically, they are not allowed to ask you about any disabilities during the interview process. They can only ask about disabilities that truly would exclude from doing the job. For instance, if the job requires a person to be able to regularly lift 50lbs., they have the right to ask if that would be a physical limitation for a job candidate. Therefore, IF your disability comes up, it should only come up under that kind of circumstance OR if YOU actually bring it up yourself.

I do suspect if you choose to bring it up during the interview process, they may exclude you as a candidate based on some other factor to cover themselves. The better route to take is to get hired on your qualifications. Once hired, you can go to human resources and discuss specific accommodations that may be needed for your disability at that point. Those accommodations can help protect you from being fired purely on the basis of your disability; it won't completely prevent getting fired (no one is completely immune to losing a job no matter what their disability), but it will require better due process on their part.