[SOLVED] can acces shares on ubuntu network

[UbuntuNerd]

please correct me if im wrong anyway i have an Ubuntu server and Ubuntu desktop also i have a vista machine in my home network i installed samba and firestarter and i can see all the shares from all pc's but when i try to acces them im prompted with a login screen i used the right user name and password but got access denied any ideas i also try smbtree here is the output

WORKGROUP
\\UBUNTU
\\UBUNTU\share folder
\\UBUNTU\PDF PDF
\\UBUNTU\IPC$ IPC Service (ubuntu server (Samba, Ubuntu))
\\UBUNTU\print$ Printer Drivers
\\UBUNTU\homes Home Directories
\\THEMONKEY-PC
\\THEMONKEY-PC\Users
\\THEMONKEY-PC\Send To OneNote 2007 Send To OneNote 2007
\\THEMONKEY-PC\Public
\\THEMONKEY-PC\print$ Printer Drivers
\\THEMONKEY-PC\My Pictures
\\THEMONKEY-PC\IPC$ Remote IPC
\\THEMONKEY-PC\D$ Default share
\\THEMONKEY-PC\C$ Default share
\\THEMONKEY-PC\C
\\THEMONKEY-PC\ADMIN$ Remote Admin
\\JAIME-DESKTOP
cli_start_connection: failed to connect to JAIME-DESKTOP<20> (0.0.0.0). Error NT_STATUS_BAD_NETWORK_NAME
can anyone help thanks!!

[superprash2003]

have you added samba users while configuring samba?