Y'know... I'd kiss that computer... but I haven't cleaned the outside of it yet

---------- Post added at 17:09 ---------- Previous post was at 15:17 ----------
it's still only seeing the 128mb from the gfx card and using that as opposed to the 1Gb of ram in the ram slots (of which there are two)
Is it
a) the previous owners fault for getting someone to just stick any random RAM in that fitted into the slots
b) a possible issue with Ubuntu not seeing/using the 1GB RAM?
Or something else?
---------- Post added at 18:09 ---------- Previous post was at 17:09 ----------
Ok, I have the MoBo pinned down, it's a gigabyte 8s661fxmp-rz and it's refusing to see the RAM still.
There's also an 'AverTV' card in it - as yet, I haven't determined what it does - or what sort it is.
The GFX card is a geforce fx2500 (128mb ddr+tv)