PowerMac 6500/250 acting up/ethernet problems/USB

[sinnott-armstrongn]

I have three problems with Yellow dog Linux (all relating to YDL 3.0.1) 
that I am trying to solve:
1) First, I have a PB G3 Wall Street 233 Mhz (160MB RAM) and an iMac 
RevB 233 Mhz (64 MB RAM). Both have onboard ethernet, and both are 
connected to a NetGear switch which is connected to a 500 Mhz iMac DVSE 
(running OS9/OSX.3 soon YDL) throught Ethernet with an AirPort Card. I 
was wondering if it was possible to share the internet connection with 
the other computers and if so, how.
2) On the RevB iMac, I have tried to attach my USB Flash drive and 
externat USB SuperDrive to it. They are successfully recognised under 
hardware manager, but do not appear on the User Mount Tool. How do I 
mount them? (they are not in /mnt either).
3) I am trying to install on a PowerMac 6500/250 with a 250Mhz 603ev 
processor and 48 MB RAM (I am getting more). I go through the whole 
install process, but when I finish entering the root password and other 
users, it tries to read the packages and then reverts to a weird 
multicolored multioverlapped screen that sits for 30 min (that is as 
long as I would wait). I then reboot and try agian. I tried with no 
video driver etc. and it still didn't work. I was wondering if (a) Do I 
need more RAM? (b) can I do a text-based install? (c) what should my 
prefs look like? (d) are there any extra kernel options I should put 
on?

Thanks for the help!