to enable users to map drives from your system if its running windows xp.
1. go to group policy editor (gpedit.msc from run)
2. go to Local Computer Policy -> Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options
3. Choose the policy "Network access: sharing security model for local accounts" and set it to "Classic - local users authenticate as themselves"
this way you can map your drives from a remote system and use it with your users full priviliges.