I think I have found 2 alternatives that are what you are looking for, the Saitek Pro Gamer Command Unit
and the Logitech G13
These are a similar product to the n52te and nostromo, expect there is one difference, the joystick/thumbstick on them is extremely customisable. You can set the different X and Y axis on it to the X and Y axis of a mouse.
As said in a review, "The thumbstick is an ordinary 2-axis analog controller, so if your game supports joystick motion you can leave it unprogrammed. But you can also set it — separately for each axis — to send mouse movements or keystrokes.
Read more at http://the-gadgeteer.com/2006/07/24/saitek_pro_gamer_command_unit/#i85KLuKKjLWrespk.99 "
The G13 also has a joystick that you can customise to mouse movements.http://logitech-en-emea.custhelp.com/app/answers/detail/a_id/31714/section/troubleshoot/crid/404/lt_product_id/5123/tabs/1,3,2,5/cl/cz,cs
Picking between these would be personal preference, although I do believe the G13 is more widely available.
Feel really sorry for you mate, this is a disadvantage that heavily impacts your life.
Try posting over here(http://www.ablegamers.com/7-gaming-with-a-physical-disability
), they should be able to help you much more then over here if you need any more help.Edited by ALMOSTunseen - 5/13/13 at 3:31am