Netweaver and navigating

Currently have built our inhouse web using Jbuilder and JCO and bits of ITS

Now with netweaver I can see we can use that to replace juilder as the IDE, but was wondering what people use for navigating from one SAP transaction to another.

Let me explain.

Most sites have a welcome page (no intelligent transactions there). Next you would choose an area (say contract processing) which can take you to another page which would have things like

1) otion to create a new contract

2) list of your current contracts

3) .....etc

Well should netweaver only be used for the intelligent transactions or also for the base pages and moving from one page to another - ie the whole site (like we can do in Jbuilder)?

Thanks