Bernie's gotten you off to a good start.
This site is a must visit as soon as your friend gets online, or you can go there for him.
6400 zoneThe home page presently has a discussion (scroll way down) on various ethernet cards and problems with some of them. That makes me think he could have a problem with his card or even the ethernet wire itself.
Read the info there and elsewhere on the site about ethernet and the 6400.
As for RAM, your friend is not maxed out.
QUOTE
The largest size DIMM either the 64/500 can use are 64MB DIMMS. So the maximum amount of ram for the 6400 is 136MB (64+64+8 on the mother board)
This page has various experiences with users and OS 9 on the 6400. Keep in mind you will be reading about mostly problems as those who don't have trouble tend not to write in. If he could upgrade to 9 he could run Netscape 7 but he would also need to truly max out RAM for that. Otherwise 8.6 was a good OS.
OS9 on 6400Those "configurations" and "options" can be found on the menu dropdown when you are in the TCP/IP control panel.
The best way to keep updated is to post here and we all can chip in.