Samba unable to map from XP machine, vista is fine

[redxine]

I'm setting up a network at my church and have a FC12 server running samba that's set up with the following smb.conf:

# Samba config file created using SWAT
# from UNKNOWN (127.0.0.1)
# Date: 2010/05/27 09:38:54

[global]
	workgroup = taxidi
	netbios name = TAXIDI
	server string = server
	security = user
;	encrypt passwords = yes
	guest ok = yes
	guest account = journey


[tmp]
	comment = temporary
	path = /tmp
	read only = no
;	browseable = yes
	valid users = journey, outfitters, taxidi

[taxidi]
	path = /home/outfitters/database
	read only = no
;	browseable = yes
	valid users = journey, outfitters, taxidi

[data]
	path = /var/www/data
	read only = no
;	browseable = yes
	valid users = journey, outfitters, taxidi

[taxidi-1]
	comment = taxidi
	path = /home/outfitters/database
	read only = no
;	browseable = yes
	valid users = journey, outfitters, taxidi

I can mount the 'taxidi' share just fine with the user outfitters [smb user, unix username = taxidi] just fine on a vista computer, but can not mount it using the same settings on a windows XP machine. Any thoughts?