A family of Microsoft word processing software products for creating web, email, and print documents.
Seriously? Registry hacking before a suggestion to run
winword.exe /r
from the Start -> Run box? The /r switch, "Re-registers Word in the Windows registry. This switch starts Word, runs Office Setup, updates the Windows registry, and then closes."
Definitely try this before you go digging through the Registry! Accidentally deleting or changing the wrong registry setting can result in a completely unresponsive system.