Thanks to Martin, i now know GD is enabled, ( but the picture didn't quite look likeMartin :/) . I will be checking the zlib and backup.
The big challenge is to aim for constructivist course design. I'm running this trial over 10 weeks as part My MEd. I feel very excited.
Best help is to visit other constructivley based learning sites.
Please visit and test me out. I need to find where the limits are.