If you are successful with the newest WAMP config I forwarded, PLEASE take minute and post your results here (and maybe EVEN as a stand-alone new thread in Moodle Windows forum).
It is just as important to post SUCCESSES here as it is to post problems!
And, since the WAMP setup has such a troubled history, a SUCCESSFUL setup could save a lot of pain and frustration for other new WAMP users.
Good luck I hope it works for you, and again bump your RAM up from 1GB as much as you can! 2-4GB RAM will serve you and your students well!!