You need to look for "OpenDocument" or "URL Reporting" in the BO SDK documentation. You're web application will have to be able to connect to the web server where the site for InfoView is installed.
you'll see several items come up about "Constructing the URL". They're listed under the COM and Java SDK's but the url has basically the same format whatever language you build it in. The only differences might arise if you're using the .NET version of the BOE web applications instead of the Java version.
Another place to look, if you're on XI 3.0 or 3.1 and have access to the site is
http://help.sap.com. Click on the SAP BusinessObjects tab, then on BI Solutions, then on the
SAP BusinessObjects Solution Portfolio Knowledge Center link in the middle of the page. This will take you to a page where you can download BOE documentation. The document you're looking for is titled "Viewing Reports and Documents Using URLs".
-Dell