Came across this great article the other day in the gentoo wiki on how to integrate firefox with kde:
http://gentoo-wiki.com/HOWTO_Integrate_Firefox_with_KDE
For all you kde users that are sick and tired of the gnome file save window that pops up in firefox everytime you want to download a file, the above article describes in detail how to change that so you get your usuall kde file save window. In addition, there are several other tips on integrating firefox with kde included in this excellent article. A must read for any kde user.
moved to tips and tricks by ianw1974 (felt this the best place for it)