Context sensitive help (Right click)

I want to be able to right click on components on a form and use the
'What's this' method to provide help. I am not sure how to do this. I
have tried to use the winHelp function but seem uncapable of getting it
to work properly.
I have only just started commercial programming after leaving uni and
would really appreciate a hand with this. If anyone has any code that
could help its would be great.

Thanks in advance