How install two sap bo versions in one server (BO 3.1 and 4.1)

Hi Frns,

I am trying to install BO 3.1 and  4.1 in windows server 2008 R2. It is giving a error .... Not accepting port number 2008

First I have installed BO 4.1 and now trying to install BO 3.1. Help on this...

Regards

Riaz