Hi Limbo,
That's a couple of nice Amiga systems you have there.
1. For NewIcons, the download you want from Aminet is:
http://aminet.net/package/util/wb/NewIcons46.
2. You can get a version of MultiView that works under Workbench 2.1 at
http://aminet.net/package/util/sys/2b_mv_os2.
Redwood