Enabling the guest account is a bad idea anyway, so it's probably good it doesn't work. The short version of why it's a bad idea is that it's a security risk, just like any account without a password on it. If for some reason you need to let someone else access your system, create a second account for them, and set the necessary restrictions. Just be sure it includes a password, and not some easily guessed one either. Google should help you locate more information on creating strong passwords if you need it.
i tried (for the first time) to log in as "guest" but am not able to. i enabled the guest account from control panel. the guest icon appeared...when i clicked on it the first time the error msg i get:
Windows cannot log you on because your profile cannot be loaded. Check that you are connected to the network, or that your network is functioning correctly. If this problem persists, contact your network administrator.
i restarted the computer, now when i click on guest, nothing happens; if i click on my icon, every thing is normal.
system: windows XP PRO serv pk 2, lenovo t61
the pc works great otherwise.