Comment 3 for bug 133703

That article is from February 2007 and the problem described therein may have been fixed already, as I'm unable to find an open bug report related to your problem. If you do find one, please change the bug number (remember to select "Samba Bugzilla"). If you don't please look into the DACL of the printer share to see if "Everyone" is listed and is effectively allowed. Other network security policies could restrict access as well. But we can't help you with that as we don't provide support for Vista. The official Windows Vista support website is here: http://support.microsoft.com/windowsvista
There are also unofficial community support forums, for example on neowin.net: http://www.neowin.net/forum/index.php?showforum=194