[?]: I-FIX suggest for novice

[PLC_ITA]

Hello friend's. My customer ask to if is possible for me to buil a supervision through I-FIX , possible with last version.

I have already download a I-fix V5.0 but i have'nt installed.
Is necessary a key for this package

I have 3 question :

1) Is necessary a key for this package
2) Is possible to use I-FiX whit Simatic 300 via Ehternert
3) i Know Wincc and Intouch wery well, for your experience, can i use I-FIX or is very hard ?

Thank you friends