I'm only supposed to do any personal use during lunch and breaks, ans I sometimes get in a bit early to check e-mail. Perhaps you could ask about modifying company policy in this direction. The number of terminals, their location (if you deal with the public), etc, may affect the administration's policy. If you can find out why the policy is in place (sometimes the policy's just outdated, sometimes there's a reason), and offer workable alternatives, that might help your cause. Good luck.