Since ProDT is developed under the Eclipse architecture, it is deployed as a set of plugins which you can install into your current Eclipse installation.
Although, to make things simpler, it is also deployed as an entire Eclipse with ProDT's plugins already installed (the SDK) for Linux and Windows.
1) Extract the contents of the .zip/.tar.gz of ProDT in a new directory.
2) Launch Eclipse using the executable named eclipse on the root of the extraction directory.
3) Configure the prolog compiler.
1) If you don't have an Eclipse already installed, you can use this Eclipse 3.3.2
2) Extract the contents of the zip/.tar.gz file, inside it you will find a directory called plugins which is where you should copy the ProDT plugins
3) Launch Eclipse using the executable named eclipse on the root of the extraction directory.
4) Configure the prolog compiler.
1) If you don't have an Eclipse already installed, you can use this Eclipse 3.4
2) Extract the contents of the zip/.tar.gz file, inside it you should create this directory structure to copy the ProDT plugins
eclipse | |->dropins | |->prodt | |->eclipse | |->plugins | |->ar.com.tadp.prolog._X.X.X.jar |->ar.com.tadp.prolog.swicompiler_X.X.X.jar
3) Launch Eclipse using the executable named eclipse on the root of the extraction directory.
4) Configure the prolog compiler.