Windowwasher will clear your PC, but it's safe to assume everything that goes out on the network is monitored and logged.
Like I said in an earlier post...typically the IT Dept (or at least specific people within the Dept) has access to all that info, we just don't care. Unless someone (for instance, your supervisor wondering about your performance) asks us to pay attention.
ALso, I use 2 computers...one is a DSL line and the other T1 is the network one. Am I safer on the DSL since it's not connected to the network?