How to install from the Citrix website:
1. Under Download Clients click Citrix Presentation Server Client Packager Version 9.0, scroll down to Recommended Version - language should be English click Get Software a window will pop up click on Download Here - a box should pop up asking Do you want to run or save this file? click Run. If you are running Windows XP with Service Pack 2, you will see another box stating The publisher could not be verified. Are you sure you want to run this software? click Run.
2. During installation of the Citrix ICA client, take the default configurations as presented, when you get to License Agreement select I accept the license agreement, make sure that Program Neighborhood Agent is X out under Select Client. If its not by default, click on the box next to it with the arrow pointing down and select Entire feature will be unavailable, click Next. Then continue to accept the defaults.