config.filebrowserImageLinkUrl?

Hi Everyone,
I'm wondering if anyone can help me? I'm looking to try to find out if a certain feature I want to use exists in CKEditor, if there is a better way to do what I want to do or a temporary workaround until something like it is implemented after I post a feature request on trac.

Firstly, a little background. I'm integrating CKEditor into a CMS as the main editor in replacement of TinyMCE, which has had it's day unfortunately. I must say I'm very impressed at how much an improvement CKEditor is over TinyMCE, how the quality of javascript is much better, how customisation is far easier in less code and integration is extremely smooth.
I'm a happy punter so far.

I've integrated CKEditor into an open source CMS project and there is one thing I would like to try to do.
In CKEditor's config I have specified :

config.filebrowserBrowseUrl