Can't install GTA

hi guys plz help... i got this problem with hlm-gtasa.iso when i mount it in daemon tools it runs the install.exe but nothing happens.. so i tried looking inside the iso and i found a program called DEMO32 i used it and the autorun worked then i thougt it finally worked but when i clicked the "install gta: san andreas" it runs setup.exe and the same happend.. nothing.. what can be wrong?

what?!

it probably wasn't extracted right...extract it again from the archives...better yet buy an original one, it's well worth it!

I had the same problem as that but it was burnt to DVD.
Mounting with alcohol 120% worked fine.

okay i'll try useing alcohol 120% but i already tried useing alcohol 52%

??????????