Why not try the backup module from http://www.gruposur.com.uy
I don't give anyone on my servers EM management - due to the issues with security. However, I'm assuming you did the full install, not the one click version, so you have host access, and can therefore install modules - this is a great reliable module and I use it extensively even when upgrading modules.
It only saves the DB file for you to download from your file manager, but not the web files but I assume you would also have ftp access so you could download your files manually.
Hope this helps
Nina Meiers
Nina Meiers