Hi Niclo Iste,

That suggestion also has crossed my mind. However, I haven't tried installing the SP1 update yet. I tried this same situation with my PC I have at home running Win 7 32Bit Ultimate with the same network device (DNS-323) mapping a drive letter and I don't have this problem at home. I can reboot and the mapped drive always is connected. So the current PC's in question are running Windows 7 Professional 64 Bit. I attempted to try setting up a virtual machine of Windows 7 Pro on my PC at work running XP SP3 with Microsoft Virtual PC version 6.0.156.0 but it turns out that Windows 7 doesn't appear to install properly with this virtual machine for me to test. Anyway back to the drawing board. When I install SP1 on these PC's I will see if the drive mapping works properly and I will post my results back here again when I have more information. Thanks for all your help with this problem I know i'm not alone as i've found many forms with people having similar problems.