What Version of Portal are we on - is it Netweaver or not???

Sorry to post what appears to be such a simple question, but I am really struggling.

I am working on a paper about NetWeaver - what benefits it brings and how do we get on it.

With Portal, we are currently running Enterprise Portal 6 with SP 14 - some tell me that SP14 is NetWeaver 2004s, whilst others are telling me we need to upgrade the Portal infrastructure to get onto the NetWeaver platform.

Help!!!!

Are there any good presentations or papers that simply explain the versions of Portal, BW, XI, R/3 that you need to get to, to say you are on NetWeaver.

Thanks

Giles