Domain Password change

I'm an end-user working with a Win2K Pro in a workgroup.
I also get a valid user account in a Win2K domain, which I use to access file shares, and so on...
My question is: How can I change my domain account password, while I'm logged on my workgroup computer ???
ctrl-alt-del used to change my local admin password, but I didn't find how to modify my password on the domain (My workstation is not member of that domain)
Anyone can help me ? Thank you

 

You're going to need your Administrator to change the password for you