First off, do you have the software license keys that came with the F760?
If you don't, the filer won't really do anything unless you have the licensed features enabled, such as CIFS or NFS, etc..
If you have the license keys, add them in by running the command "license add" with the key-code, which is a short series of letters 6-8 characters long.
Do you have the Data ONTAP 6.5.7 software package?
The file should be named 657_setup_a.exe (69 MB) or 657_sysfiles_a.tar (62 MB).
If you do not have either the license keys or the software, you may be able to access the license keys and software by registering for an account at http://now.netapp.com, by using the F760's serial number (on the back).
If you have a CIFS license, you can install the CIFS license and run CIFS setup to join the filer to a Workgroup or an Active Directory or NT 4.0 domain.
From there, you can map a drive from a Windows host to the filer's ETC$ share (\\filername\etc$).
Run the "software list" command from the console to create a "software" directory.
Copy the 657_setup_a.exe (or 657_sysfiles_a.tar) file to the \\filername\etc$\software\ directory.
From the filer console, run the command "software install 657_setup_a.exe" (or 657_sysfiles_a.tar) and wait for the software to be installed.
Run the "download" command, and the filer will install the boot kernel to the hard drives.
You should be able to remove the floppy disk and issue the "reboot" command to have the system reboot from the disks.