Question : VPN and Cached credentials

I am using a VPN to join a remote PC to the domain.  That presents no problem.  Here is my question:
After joining the domain successfully and rebooting the PC how can a user login to the domain when there are no cached logon credentials available?  I mean I cannot see my DC until after I login and launch the VPN client.
Answer today please.

Answer : VPN and Cached credentials

You may have two option. After joined the domain, you will use cached credetials to logon without connec to the domain. Then connect to the domain after establishing the VPN. Or use "log on using dial-up connection".

VPN Setup
If you are running w2k/xp pro setup for a domain controller, you will have a option to "log on using dial-up connection" on logon screen after creating a ...
http://www.chicagotech.net/vpnsetup.htm