I have upgraded from 7.5.102c to 7.6.300sb it was from old Novell Netware 4.11 server running Btrive to Windows 2000 and MSSQL. The upgrade was a nightmare mostly due to lack of support from my vendor EFI. I was finally forced to get "consulting" services from Macola for 175/hr. After that everything was upgraded so far there are some bugs that creep up ... its been 3 days but nothing critical. Oh the whole upgrade phase took 2.5 hrs of consulting time ... probably unnecessary if you get sufficient support from vendor.