how to debug a gsp page? (no grails, just gsp)

[opensas]

I'm using

Product Version: NetBeans IDE 6.8 Beta (Build 200910221137)
Java: 1.6.0_16; Java HotSpot(TM) Client VM 14.2-b01
System: Windows XP version 5.1 running on x86; Cp1252; en_US (nb)

I've installed the "Groovy and grails" plugin

I don't know how to create a web gsp project (All I have is "Graisl application" from File -> New Projects -> Groovy)

I've create the standard java web app with a "Hello world" jsp page. I can run and debug jsp page with no problem.

http://localhost:8080/HelloWeb/index.jsp -> works fine, can run and debug it

I copied groovy-all-1.6.5.jar to tomcat\lib

configured the grovy servlet and groovy mapping in web.xml

added hello.gsp

and then

http://localhost:8080/HelloWeb/hello.gsp -> works fine, cannot run nor debug it from netbeans..

I also couldn't find the option to create a web groovy site, nor a way to add a gsp page to a java web application...

am I missing anything?