Do you mean all users to a Single XP-based machine or to several xp-based machines mapped one to one.
Asked the above question since only one user can take RDP in a XP machine.
Since you have a software
If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.
Load balancing is the method of dividing the total amount of work performed by one computer between two or more computers. Its aim is to get more work done in the same amount of time, ensuring that all the users get served faster.