WIN 2000, problems with 'help'

I recently upgraded one of my machines to Win 2000 Pro so that I could get a headstart on the ins and outs of it before work started asking me questions about it. The machine was previously running Win98 SE.

Most of my software continues to function as expected. However, several of my existing help files are now reporting an error:

"Not a windows help file. A newer version of help is needed to read this file."

Most of our existing staff are familiar with the current softwares running, but you always have somebody new, or need to double check an option or key combo.

This leaves us with a slightly annoying problem that I can't seem to figure an answer to. has anyone else run across this issue? If so, how did you work around it, or solve it?

SWyse