The wallhack isn't a dtx file. Its an LTB file that needs to be extracted(two ltb files to be exact) but you need a rez extractor to get them. No cf rez extractors are released and will probably never be so don't bother trying to make one unless you have a rez extractor(with the cf hearders otherwise that extractor wont work). A little tip: go find the monolith rez extractor(i wont say its real name) and reverse engineer it.