Thanks Guys , I am greatful for such a good response and lots of good links and suggestions, i have been testing them on Our VLE test site and found that learning essential for Microsoft office works well and its free for schools ,it works like an addon to office,it uses the thesis lignt version to save resources in to scorm format. which suggests to me that thesis should work well with SLK and the pro version should give you more options.
Hot potatoes works very well but it does not keep the answers, it provides teacher with score but actual quiz or test resets it self. As nsbr said it could be if I am running an older version of SLK , upgrading it to SLK 1.3.1 might sort it But this might sound silly but how do I check which version of SLK i am running