Hi JC and welcome to our community
First off, don't panic. You said:
Since Microsoft has decided to leave winhelp behind with the
launch of Vista...
Are you sitting down? If not, sit down. Take a deep relaxing
breath, then read the rest.
WinHelp is
not dead and does continue to work in Vista. They just made
it more painful. 16 bit WinHelp files work straight away, while 32
bit WinHelp files will require downloading the 32 bit WinHelp
display engine from Microsoft.
It's true that they really do want everyone to move away from
WinHelp. So you are right to consider moving in a new direction.
But you don't need to do it now or lose all help capabilities.
Cheers... Rick