Hi,
Place the VM in the same Workgroup as the host machine (default WORKGROUP, you may want to rename the default though on your host first say, MYWORKGROUP, ) see My Computer on the XP VM to change itsname and workgroup settings.
After restarting the vm, ping the host machine (by name) to confirm a connection eg. ping //myxpvm. In Network settings (from Control Panel>Network and Sharing center>Adaptor settings..... make sure if IPv6 is enabled.
(not too sure on the actual XP control panel settings names)
You do realize that XP is no longer supported? (there are Enterprise support agreements available from MS though).
Regards.
Rob^_^