Are you saying that (a) you want Flex Builder to launch the browser,
but with a custom URL that you specify, or (b) you don't want Flex
Builder to launch the browser at all -- just connec to an
already-running browser that you launched? Both are possible.

(a) If you want Flex Builder to launch the browser, but with a custom
URL that you specify, just edit the "launch configuration." Easiest
way to do that is described here:
http://www.morearty.com/blog/2006/05/23/flex-builder-ctrl-click-to-access-a-lanc\
h-configs-properties/
Then, just edit the URL shown in the "Debug" edit box.

(b) If don't want Flex Builder to launch the browser at all, but just
connect to a browser you already launched manually: This is a hack,
but it works: Go to the same "launch configuration" dialog mentioned
above, and just set the URL to any old thing (e.g about:blank, or if
that doesn't work, http://www.google.com). When you click Debug, Flex
Builder will launch a browser at the bogus page; and now, for the next
two minutes, Flex Builder is listening on a socket, waiting for the
Flash player to connect to it. Just ignore the bogus browser, and go
over to the browser you wanted, and load your swf. When the Flash
Player starts, it will connect to the socket that Flex Builder is
listening on.

- Mike Morearty
Adobe Flex Builder team


--- In flexcoders@yahoogroups.com, "JWOpitz" <jwopitz@...> wrote:
>
> Hi folks,
>
> I have tried to find this topic posted in the group and the web in
> general and tho I find plenty on related cases, I cannot seem to find
> the right answer. So I pose this question to you, my fellow colleagues.
>
> I want to be able to connect the debugger to a swf that has NOT been
> launched by the Flex Builder plug-in. For instance, I want build a
> debug version swf locally, deploy it to a server manually (by c&p'ing
> it there) and then connect the debugger to that swf.
>
> Used to back in the Flex 1.5 days I remember being able to just click
> the 'localHost' button and it would work as expected. However, I have
> not been able to do this with Flex 2 as it just reopens the connection
> box and eventually fails out.
>
> So is this possible? I apologize if there is indeed a duplicate post
> and I happened to miss it. If so, please post a link.
>
> Thanks,
> J
>