10.2 doesn't share your drives on the network, just the Public folder. If you want to make all your drives available, you can do it through the Terminal.
Open Terminal and type;
cd /etc
sudo pico smb.conf
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You'll be prompted for the password.
You should see the following with the exception of the lines in bold which I added for my system so I could access all volumes on the Mac when in Win2K;
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[global]
client code page = 437
coding system = utf8
guest account = unknown
encrypt passwords = yes
[homes]
comment = User Home Directories
browseable = no
read only = no
create mode = 0750
[Bob Woods Computer]
comment = Root level of OSX-60
path = /
writable = yes
[volumes]
comment = CDs, disk images and network volumes
path = /Volumes
writable = yes
;[public]
; path = /tmp
; public = yes
; only guest = yes
; writable = yes
; printable = no
;[printers]
; comment = All Printers
; browseable = no
; printable = yes
; public = no
; writable = no
; create mode = 0700
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When done making your changes, hit Control-O to write changes to disk and press Return when prompted for a file name. The hit Control-X to quit pico and close the Terminal window.