Thanks for the suggestion. I have already been using this kind of code...
Let me give you some kind of background which might help.
My client has a web app (not done by me) for which he needed a backup solution in case of server being down or ISP would have some kind of problem (happened quite often)... For the web app he was using Prism as a browser in other not to let users know the address.
That was where I entered... I have created an app which is checking the connation to the server and lunches Prism of everything is all right or runs own interface if there is a problem and collects data from users and later updates the database.
The hosting provider doesn't allow access to the database from outside of their server (or web app) without SSL tunnel (actually they do allow it but you have to pay much more). So there is another app to be installed in user's machine...
Now that the number of users is growing my client has a nightmare from installing all the apps needed for his service... To conclude he has to install:
1. Java
2. Prism - for the web app
3. Stunnel - SSL tunnel
4. My app
So he would like to get rid of at least Prism.
Meanwhile the web app developer implemented a sort of authentication for users computers which are allowed to enter use it (only one at their work place no other were allowed) apart from their user name and password, but it requires admin to mark it from the PC (either remotely or physically) so I thought I could use IE or whatever default browser was on any machine and me and the client will be happy

.
But that is not the end of the story... Now the whole authentication is slowly becoming broken. This is probably due to "stupidity" (sorry for this strong
word) of the PHP developer who used session cookie to grant permission for computer to use the web app. I guess that you now know what has happened - web server has started to delete old session cookies and users are kicked out of the service... (At very beginning I have asked if cookies are not used for this kind of authentication - answer was "no" so I didn't ask any further).
So the client is now asking me if it would be possible to use IE or any other installed browser to use with the web app, but in the way so that they won't see the address, so he can get rid of this "authentication" quickly (he knows that I have created updater for my app in case there are some bugs) . That's why I have been asking about the integration.
So far I found following possible solutions:
1 . Use IE kiosk mode - not a good idea since it runs only full screen
2. Utility called "QLaunch" - cannot be used commercially
3. JDIC - was for integration of some native components into JFrame - this project is dead for some time and last version which I found didn't work on my win7...
Any ideas how this problem can be solved? I think it would be enough to lunch IE without address bar and with disabled printing. Even though I would prefer putting it directly to JFrame...