change web application given to Project Server Instance

[NC71]

setup WSS 3.0 on my server with no issues. I then proceeded to install
Project Server 2007. Everything seemed to go well. However after I finished
provisioning my Project Server instance, I noticed a mistake. I have 3 web
applications on my system.
1. Sharepoint web app
2. SSP web app
3. PWA app
I accidently selected the Sharepoint web app for my instance. I know this
would work, but I prefer to have it connected to my PWA app. Is there a way
I can change it? I checked on the server setting for the web app. It seems
I can change the default, but in Central Admin it is still showing the
Sharepoint web app. I don't know how to delete the provisioned instance
without deleting the Sharepoint web app which I still want in my
configuration. Any assistance would be appreciated.

 

[NC71]

I was able to find the delete section. However, I am still unsure that it
will not removed my sharepoint web application. Any assistance would be
appreciated.