Zeeshan,
Hi..
I have not pursued the Visual Studio integration at this point. I'm currently working on integrating the Ja.NET SE compiler into eclipse. I have built and have running eclipse on .NET using the latest release of Ja.NET SE. I am working out some bugs on my SWT/WPF wrapper implementation that I have done for eclipse, and should have that working properly soon, and then will move on to finalizing the Ja.NET SE compiler integration. Once that is done, then I'll post a prebuilt eclipse IDE binary that runs on .NET which can be used as an IDE for Java development both for a JVM as well as .NET.
The next plan is to take the eclipse JDT plugins that I have built and have running on .NET and use them in building the Visual studio Ja.NET SE plugin. It looks as tho I can use quite a bit of the Java JDT code in building the VS plugin. Hey... after all that is what Ja.NET SE is all about... it gives you the ability to leverage all of your Java code on .NET... in this case leveraging the JDT plugins on the Visual Studio platform....
If only there were more hours in the day to get all of this done ... :-)
Dave