SIDS & STARS PROBLEM

I've recently downloaded the navdata update (All In One). I've used the FMC plenty of times for flights in Europe with generaly no problems. When I tried to use it in Australia I found 2 problems. At first it would not display any SIDS to choose from. This was because the australian information was zipped twice. So when unzipping to the SIDS, STARS folder they stayed as zip files and therefore couldn't be read. After fixing this problem I tried again. Now the SIDS and STARS are displayed and selectable but do not register in the route page. Another thing I have found is that airways in the same region of the world are not selectable even though the corresponding text file does contain them. If this sounds like something you have found too or you are able to help me solve this problem please reply.Thanks in advanceikat