Toshiba CD ROM

Hi,
I recently had a new HDD installed in my Toshiba 2180CDT however, since then the secondary IDE controller has ‘failed’ or ‘does not exist’ and thus, I am unable to see my CD ROM under windows 98. I know it works as I used the recovery CD to install everything! I have tried everthing I can think of, reinstallation of windows, formating, removing the controllers and reinstalling them etc.. HELLLP! Thanks 🙂