Hi Friends I Need Detailed Answer..<br><br>WE have Exchange Server,Proxy 2.0 & IIS 3.0 on the same machine, Now I wants to install OWA on the same machine I know for Installing OWA First I have to Upgrade IIS 3.0 to 4.0, but i have heard after Upgrading IIS 4.0 i have to reinstall proxy and some peoples says that Installing OWA on the same machine which has EXchanghe Server is not Good.???????????<br><br>