ok, Ive done a bit of poking around,
1st,
you are NOT going to get *buntu of any form running on that machine to any decent standard,
Lubuntu minimal might just about scrape it,
but, seems we have an issue with your graphics card needing backdated drivers that arent on any newer .iso's
if we could get something running on it we could find out what the graphics card is,
from what I understand [and thats not much] it seems to be trying to use some of your very precious ram to try and accelerate the graphics card,
what sort of slot is the graphics card in?
FWIW, Ive had ubuntu running on 256 ram with a P3, albeit very very badly, but, Lubuntu minimal flew on it [relatively speaking] ,
Ive also got an ancient laptop [pre 2000] that a friend gave me to mess about on, it runs puppy or DSL really well, even has wi-fi on a slot in card
can you get a LIVE CD to boot on it, even if its really bad, we could run
lshw to find out your specs