I do not have sufficient privileges

I can log onto my windows computer from my mac, but when I try to copy files over to the windows computer if gives me this error I do not have sufficient privileges for some of the item, any idea on what this means and how I can fix the problem

It's probably because you're using the Guest account on your Windows machine. Your best bet would be to disable the Guest account, then when you connect to it, you should be prompted for credentials. Supply your normal account credentials (your username on the Windows machine, and password if one exists) and it should have the same permissions as you do when you use your Windows machine.

Thanks for your help

I checked and guest account is off, I have no problem logging into windows from the mac machine but I can not log onto the mac machine from my windows machine, also when I log in to the windows machine from my mac I can not drag files over to the windows machine from the mac, thats when I get the privileges error.