Assign static ip using citrix

[mikasu]

Hi All

I use a cisco vsp client to login to my office vpn.. From there I go to the browser and login to a citrix box that provides me with a list of applications..

I have an application that lets me login to the mainframe. However, to use certain screens of the mainframe, my IP needs to be defined to the mainframe. However, everytime I close and open my application (within the same VPN session), the mainframe indicates that I have a different IP address..

What do the admins need to do so that they can assign a static ip to me when I login ?

I hope my question made some sense..

Thanks.. Mike