Hollo! Everything should work. Check the availability of the file in the archive. Check the archive structure. The meta.xml file should be in the root of the archive.
Hello, Mickael.
Try to refresh browser with ctrl+f5 to clear cache. May be old styles were cached. I check this code in IE6, 7, 8 and it works. Try to check with developer tools in IE (or in other browsers) that the code is really applied.
Hello,
If you mean the default skin you can use the following solution
#page #navbar li {
margin: 0;
vertical-align: top;
}
#page #navbar a {
margin-left: 1px;
}
#page #navbar .nav-users {
display: none;
}