Can you please give me recommendations for a Win 7 compatible trackpad, and/or advice on how to request alternate devices from the workplace because of a medical condition?

My laptop at work is way below specs for some new equipment we’ll be getting. I have requested a desktop to replace it, but I will miss having a trackpad, because they are easier on my hands which can get tendonitis and ultimately carpal tunnel syndrome as a result of Rheumatoid Autoimmune Disease.

Are there trackpads for Win 7 that will support gestures (ideally, customizable ones) and will cooperate within a Citrix environment (where printer compatibility is an issue, so I worry that less common input devices might also be problematic).

I also have not dealt with requesting special equipment from the job because of a medical condition, as I am just in the earlier stages. Does anyone have experience with this, that can give me advice about the laws, such as the American’s with Disabilities Act and others that might support my request for an adaptive device? I live in New Jersey, if there are variations among State regulations.