[Haskell-cafe] the complex package is hidden

Hi, surprisingly i can't seem to google an answer to this: Could not find module `Complex' It is a member of the hidden package `haskell98-2.0.0.2'. Use -v to see a list of the files searched for. it's been quite a while since I've used ghci, and I'm just about positive I've solved this problem before, but can't seem to figure it out. Thanks for any help.