I have home network with WinXP box.
New Linux (FC3) box, clean install, no partitions, no dual boot
I cannot see the WinXP shares on the Unix side, nor the Unix share on the WinXP side.
All connections seem up and running. Internet Connection Sharing through XP box is working OK.
Read many posts and followed many of the suggestions. See print out below

The WinXP share that I am trying to see is my C: drive with sharename "Desk1 C"

Anybody any suggestions ? Help very much appreciated.
Thanks in advance

[root@localhost ~]# nmblookup desk1
querying desk1 on 192.168.0.255
192.168.0.1 desk1<00>
xx3.xx6.xx2.xx5 desk1<00> (x-ed out for security reasons)

[root@localhost ~]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 0x:1x:5x:7x:8x:8x (x-ed out for security)
inet addr:192.168.0.6 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fexx::2xx:5bxx:fexx:8dxx/64 Scope:Link (x-ed out for security)
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:14570 errors:0 dropped:0 overruns:0 frame:0
TX packets:15957 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12667568 (12.0 MiB) TX bytes:1425069 (1.3 MiB)
Interrupt:10 Base address:0xa000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:2451 errors:0 dropped:0 overruns:0 frame:0
TX packets:2451 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4957406 (4.7 MiB) TX bytes:4957406 (4.7 MiB)

sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

[root@localhost ~]# ping desk1
PING desk1.mshome.net (192.168.0.1) 56(84) bytes of data.
64 bytes from desk1.mshome.net (192.168.0.1): icmp_seq=23 ttl=128 time=0.238 ms
--- desk1.mshome.net ping statistics ---
24 packets transmitted, 24 received, 0% packet loss, time 22999ms
rtt min/avg/max/mdev = 0.142/0.241/0.497/0.060 ms, pipe 2
[root@localhost ~]#

[root@localhost ~]# rpm -aq | grep samba
samba-client-3.0.10-1.fc3
samba-common-3.0.10-1.fc3
[root@localhost ~]#

[root@localhost ~]# mount -t smbfs -o credentials=/home/hans/smb.cred //Desk1/Desk1%20C /home/hans
Password:
5599: tree connect failed: ERRDOS - ERRnosuchshare (You specified an invalid share name)
SMB connection failed
[root@localhost ~]#

[root@localhost ~]# smbclient //Desk1/Desk1%20C -U hans -W MSHOME
Password:
Domain=[DESK1] OS=[Windows 5.1] Server=[Windows 2000 LAN Manager]
tree connect failed: NT_STATUS_BAD_NETWORK_NAME

first of all you should try to get rid of the space in the sharename. Rename it to for instance Disk1_C which saves a lot of hassle on the command line.

Hint: don't mount something into your home dir. Make a new directory and mount your windows share there.
I advise you to use CIFS instead of SMBFS and mount your share like that:
If you installed Gnome (default on Fedora) you might want to try "Applications" - "Network Servers" which also works quite nicely.

You have to configure Samba to share directories from Linux to Windows. (Fedora has a nice and simple GUI for that called "system-config-samba")