Changing default port for orion, WHD, etc.

I have a small site, using SolarWinds Orion and Web Help Desk on the same server (yes, I know it's probably not ideal, but...)

These two were installed with the following ports

:80          Default Solarwinds orion site

:8081     Web Help Desk site

I'd like to change these to be

:8080     solarwinds/orion

:80         WHD

Is there a good doc on changing the default sites for the two products properly?

Thanks,

Todd