Okay, do a search on "zero gravity computer workstation" for more alternatives. Here's an example of what I'm talking about:
Here's info on the Dragon Naturally Speaking
which is sold on the QVC website. It is also available on Amazon.com and directly from the manufacturer.
I can personally vouch for the Dragon Naturally Speaking software. I have it and use it quite often.
Look into perhaps your disability insurance covering all or part of the costs for that zero gravity workstation. Do you have a disability advocate? If not, your physician might be able to help you find an advocate or even help you get the paperwork done to apply for help paying for the workstation.