Please use the below given links to download all the 4 files of informatica.
File 1 :- https://edureka.wistia.com/medias/wmfmrwoe32
For file1 2 and 3 you can just download it and for file 4 please unzip the file using winrar and after that you will find the folder of server and client which you have to again unzip it.
Link to download winrar - http://download.cnet.com/WinRAR-64-bit/3000-2250_4-10965579.html
Please let us know if you need any further help.4 hours