Office 2003 Pro hyperlinks doesn’t work

Hi,
Hyperlinks in all office programs stopped working. I can’t use existing hyperlinks (No error messages) and can’t add hyperlinks (The OK button isn’t active in excel and in word, nothing happens when try to add hl.
Reinstallation of office programs doesn’t help.
I have XP SP2, Office2003 SP3.
Thans for advance
Regards Simppa