For all the information you require the best place is to visit the CAMS website as it outlines on their Qld Calender all events .. but if you check it out you can see which ones are Hillclimbs.
There is a 'come & try' day on Feb 8 at Mt Cotton
Here is a link to the pdf calender
http://www.cams.com.au/downloads%5Cqld%5CQ-CAL2009.pdfThere are not many 'non' CAMS hillclimb events like there is with AASA circuit racing events
Hope this info helps