Eaglebox is a Dm500 clone, depending on image should be exactly the same as a 500.
I've never used the specicifc eagle box images, install the latest build of OpenPli Maxvar and from the software management menu, install CCAM 2.1.4 and the CCAM config file.
Give your box an IP address or use DHCP. FTP to the /var/etc and edit the CCAM.cfg file as required.
Select CCAM as your default cam, and scan transponder for channels..
- I would sugegst having a good read around this and other forums, and having a go 1st, then post questions on the bits your getting stuck on, rather than expecting people to give you a complete A-Z tutorial CS advice is on dodgy ground so complete tuts are not necceasrily available...