Still following instructions at "/people/gregor.wolf3/blog/2008/03/31/sap-netweaver-70--java-and-abap-trial-version-on-linux--vmware-edition--tips-tricks
I now manage to login as developer into SAP GUI (I also manage to connect from IE, as explained at the bottom of the blog).
I tried 'from IE" to look at the "hello world" J2EE Engine example, but it requests me a login/pass, I give developer/developer, then it says I'm not authorised.
What user pass should I use ? I tried j2ee_admin/j2ee_admin (I saw these accounts in SAP GUI somewhere, under Tools/Administration/..."