Changing or removing the user name in Word2000 comment balloons

I 'unno if you're a programmer, to create a new macro in word you go Tools->Macros->Macros..., type a name into the "Macro Name" textbox, click Create, and then the VB Editor will open. Put the code I gave you above into the new subroutine that gets created

Then you can run the macro anytime by going tools->Macros->Macros..., selecting the macro from the list and clicking Run.

Thank you all for the excellent help.  Frosty555 and Graham Skan, your macro will be help me with this problem in future.
Not knowing any VBA, I used Brundo's method to resolve the problem, will check  it later with the macros, but I am sure it works too. BTW, Word2003 seems to have a setting which can change comments, but not Word2000.

This is the first time that accepted multiple solutions before, I hope I did the right thing. Thank you for your help.

No problems
A word of caution about replacing any text directly in the Word file (however saved - doc, rtf, xml, etc)). There is a danger, especially with short texts, of changing more than you want to. The Word object model understands the function of any particular piece of data, so will not modify anything that do fit the target object.

Thanks for notifing me. Actually, I discovered that the text in the comment was also modified and redid it accordingly.