Binding Service Desk to one IP

I would like to run Service Desk on server that has an existing IIS installation. I have three ip addresses assigned to this machine. ServiceDesk seems to bind itself to all three addresses when starting up.

Example:
172.16.7.21
172.16.7.25 - Configured in IIS to use port 80
172.16.7.26 - Configured in IIS to use port 80

It gives me an error when trying to start the servers while ServiceDesk is running. If I stop the ServiceDesk service, the IIS web sites start with no problem. I have tried starting the IIS web sites and then ServiceDesk, this also comes up with an error. Is there a way to bind ServiceDesk to just one IP address?

Thanks,
Richard