Copy .iso file to ESXi server datastore

I have a fresh install of ESXi 3.5U2.  I need to copy a windows install cd image (.iso) to the server now in order to create a new VM and boot from it.  I use winscp in ESX 3.0.2 but I understand ssh server isn't running in ESXi....any ideas on how to copy the file?

Thanks,

Dave