Question : Remote Desktop, cannot select Domain Users for the "Select Remote Users" section

Using a Windows XP laptop with SP2, i've enabled remote desktop capability but when I click on the button that says "Select Remote Users" it only allows me to pick from local users, "Entire Directory" is not listed.  The new laptop is a member of the domain and I'm logged in with an domain account with admin rights on it (on the domain and locally).  I tried typing in "domain\username" but it didn't work.  This is probably something simple, but I can't figure it out.,

Answer : Remote Desktop, cannot select Domain Users for the "Select Remote Users" section

Agreed.  I'm researching it now, but everywhere I look says it works as I remember.  I haven't found a place that says what to do if it's not in the selector box.

On a fluke... have you verified that the DNS settings are pointing to your AD DNS server and that you are connected the LAN?