I'm not a total "noob" but maybe one step above when it comes to Macs. I'm a 2000/2003 MCSE and I work for a Consultant in Spokane, WA. I recently setup a network which has 15+ Macs OSX 10.4 and one Windows 2003 SBS Server. I managed to get the macs to authenticate and logon through the active directory plugin in 10.4. Pretty sweet deal and pretty much works flawlessly. We have SMB and AFP shares setup for the mac users which seems to work perfect, except in Excel 2004. If a used tries to open up an already created document and SAVE AS or SAVE when a chage has been made, from time to time they will receive an error about not being able to replace the current document and it'll save it under a temp name with random lettering. If you open up that file and save as, it will then let you save it properly. this only seems to happen in Excel (at least that is all that has been reported to me). Any info or light on this matter?