Question concernig mount smbfs

Hi all I have a problem with mount of smbfs.

I try to connect to windows xp share directory. So I did : $>mount -t smbfs //winxp/sharedir /share

But I couldn't succeed in mounting. This is error message : " smbfs: mount_data version 0 is not supported "

My mount utility did not support smbfs? Can anyone help me?

Thanks....