To access Windows Shares from your Linux Box, do the following
Step 1: Create a Directory for mounting
# mkdir /mnt/Windows
Step 2: Install smbfs
# yum install smbfs (RH derivatives) OR
# apt-get smbfs
Step 3: Mount the Windows File System
# mount -t cifs //server-ip-addr-or-server-domain-name/share /mnt/Windows -o username=(your windows userid),password=(Your Windows Password),domain=(Your AD Domain)
Step 4: To umount
# umount /mnt/Windows