Keyboard mapping for DEC alpha Keys [1]

We log into third party application running on Compaq Alpha server.The applications has custom generated menu , for which their are shortcut keys required to move from one screen to other.Please provide mapping for the DEC ALPHA Keys provided in attachment.If we access the application from Exceed iam able to map the PF1,PF2,PF3 and other keys to standard keyboard using Exceed keyboard mapping option.IN Xmanager the same is not avaliable.Please provide the solution for same at earliest.