fixed PHP, manually download/unzipped/upload, no work

Ok,
1) manually downloaded the zip
2) unzipped into folder
3) unzipped the .dat.gz (NO ONE mentioned this) into .dat
4) uploaded into the maps folder per directions
5) hacked the code per this forum
6) uploaded the hacked PHP code back to directory
7) clicked on all the boxes and…
… does not recognize the *.dat

The page I need help with: [log in to see the link]