KMail and Spell Checker

I'm using Suse 8.2 with KDE 3.1.3. KMail is my email client but when I click to Spellcheck I get a message: "ISpell/Aspell could not be started. Please make sure you have ISpell or Aspell properly configured and in your PATH." I've checked in Control Center and it specifies Aspell as the default spellchecker and Aspell is installed. How can I get spellchecker to work? Thanks,