You are still not providing much info...
Are you sure samba is up and running?
Have you set up your shares?
Have you put your windows box in "hosts allow = " in smb.conf?
Have you set up authentication? Which type?
Have you run 'testparm' to ensure your config is valid?
Have you checked the logs for hints?
Is your firewall (if you have one) allowing access?
I do suggest you read the configuration docs and make sure your samba server is configured correctly for how you intend to use it: http://us3.samba.org/samba/docs/man/...tion/type.html