For the documentation, if you run "cdnshelp", it normally defaults to opening the documentation from the installation that cdnshelp is being picked up from.
You can point to another installation by doing:
and then you may have a choice of IC61 whatever. If it's not there, you can use the File->Library->Open Library, and then navigate to the root of your IC61X installation, then into doc, then into xmlreg, and finally pick the library.lbr file. Once added the first time, it will be listed in the sets of documentation under File->Library.
Then you can pick that library, and do searching etc within it. Much easier.
If you had been using IC5141, it's also possible to set up IC5141 documentation to be accessible with cdnshelp. To do this you need write access to the IC5141 doc directory, and you just have to do (once):
cdnshelp -refresh -hierarchy <IC5141instDir>/doc
and OK the forms. This will create the xmlreg/library.lbr (and related files) within the IC5141 doc dir.
I do this all the time, because I far prefer the newer cdnshelp interface over and above the old cdsdoc/web-browser based interface that was in IC5141.