I have two virtual machines set up; one is running Windows XP and the other is running Windows Server 2003. I can map network drives from Server 2003 to XP, but not the other way around. Similarly, I can ping the Server 2003 machine from the XP machine, but not the other way around. Any ideas?
Well kinda. That is the Network card.
Try technet.com here is an article that might help you. But I would be sure that all network adapters for the server and workstation that have been created are first removed before trying again.
Sometimes disabling the firewall may help with the problem of seeing each other.
Or try this article. I would even search a little more on Microsofts technet website.
On the client machine, open IE, TOOLS, OPTIONS, under SECURITY tab click on Intranet Sites, then under there click on SITES, then ADVANCED, then type the name of your server and click Add. That should take care of the problem. Good Luck!