Hmm, more playing this eve....
Figured out how to use S-Video connection - reaosn it was black and white was I had wrong setting on TV for that AV input - changed it to s-vi and colour works fine

Clearer pic than composite, but not as clear as RGB scart - but RGB scart is INCREDIBLY over exposed with seriously high contrast and brightness.... Odd!!!
at 640x480, writing is readable fine, and 800x600 it is JUST readable, but still can't get any higher than this and be able to read
So not sure what to do - can send it back minus the postage back there, minus the £7 postage fee seller charged, and minus a restocking fee of £5, so total of about £15 really - so I only get £20 odd back from the £37 I paid.... so not sure if I should just keep it incase I ever need/want it for something.....