How to install wfica32.exe file on vista 32 bit?

I am trying to install citrix helper controls from citrix systems on a Vista 32 bit home PC. I unbale to download this from any website Each website I try and visit it is giving a page cannot be displayed error. I am using IE 8 and using Avast antivirus. I have optimized IE multiple times and even tried to turn off the antivirus and firewall and tried opening the download page apparently thats been of no help. Does anyone has a answer please help?