Newbie Question - Problems with PS 2003 WebParts

[Daniel]

Hi.-
I'm trying to install the PS web parts in a SharePoint site, but something
fails and at this time I'm lost, let me describe my case:
I create a new WSS site with the PS template. In the main page of this new
site I'm trying to embed the Project Center Web Part. When I put the project
server Web part with no changes I receive a http 404 error.
After that I decided to modify Web Part properties and open the content
editor. later I select the Source Code Editor and search in the code. I found
this code by default:

var sResult = xmlhttp.responseXML;
if(sResult.childNodes.length > 0)
{
var sMSPWAURL = sResult.selectSingleNode("//PWAURL").text;
var sMSPROJID = sResult.selectSingleNode("//PWAPROJID").text;
document.write("<iframe src=\"" + sMSPWAURL +
"Views/PortfolioView.asp?SimpleUI=125\" width=100% height=100%></iframe>");
}

I review the code and decide to change the next sentences to hardcode my
settings:

var sMSPWAURL = sResult.selectSingleNode
("//srvapps18:11637/projectserver/").text;
var sMSPROJID = sResult.selectSingleNode("//PWAPROJID").text;
document.write("<iframe src=\"" + sMSPWAURL +
"Views/PortfolioView.asp?SimpleUI=0\" width=100% height=100%></iframe>");
I assumed that:

* PWAURL: is my Project Web Access url so I force this to ->
srvapps18:11637/projectserver/

* PWAPROJID: I assume that this is my Project Web Access project ID but I'm
sure about what could be this content.

* And change in the PortFolioView the ID to 0.

After all those changes I didn't receive any 404 error, but neither see any
information just a blank screen.

Sure, I'm new in all this Web Parts stuffs and probably missed something
important. So, Have somebody and Idea about what I need to do in order to
properly configure this web part?

Any help will be appreciated.

Thanks