I am setting up four new Windows 2003-R2 Standard servers in a mixed environment of PC's and Mac's. I would like to know if there are extensions that should NOT be used because of a potential conflict with the Macs (OS 10.4). I have read conflicting statements in two different publications. "Small Business Server 2003" by Syngress Publishing (p.43) states that the .OFFICE extension should not be used but that .LOCAL can be used in the mixed environment while "Windows Server 2003 Second Edition, Administrators Companion", states on page 385 that .LOCAL should not be used in the Mac environment. Can someone tell me which statement is correct so that I can continue with my system design?