Access to protocol dynamics://
[HKCR\dynamics]
(Default) =”URL:dynamics link”
URL Protocol=””

[HKCR\dynamics\Shell\Open\Command]
(Default) =”path\to\AxHLink.exe %1″

ref : http://stackoverflow.com/questions/3468000/problem-setting-up-custom-url-protocol-on-windows-ce
NOTE: to open RemoteApp ( .rdp ), use mstsc command, for example
(Default) = mstsc.exe "D:\AXHLink.rdp"
or if we would like to pass parameter, just use the simple batch file and point the link to batch file

(Default) = D:\AXHLink %1
batch file that append `remoteapplicationcmdline:s:`
@echo off
copy D:\\AxHLink_Template.rdp D:\\AxHLink.rdp
echo %* >> D:\\AxHLink.rdp
call D:\\AxHLink.rdp