VMS system, telnet trouble - can pearl script solve applet ip trouble?

We have an older VMS system that stores patient information for our hospital. I wanted to make the system accesible via the web in order for physicians to access info easier than a vt. I did this using the GNU telnet applet. The applet is stored on a separate web server with several static ip addresses. When a client accesses the applet, a proxy server (included in the applet package) redirects the client to the VMS system. Unfortunately, the proxy server assigns the user the web server's IP address, and the VMS will not accept multiple connections using the same IP. There are several possible solutions, most involving a change in the vax/vms, which I'm looking into. However, the vax contractors are historically stubborn when it comes to changing the vms/vax settings. I can assign multiple IP addresses to the IIS web server...my question is, "Is there a proxy server, or a cgi/pearl script that talks to a proxy server, that can assign a different ip (from the range I set up on the IIS server) to clients who access the telnet applet?