[xmonad] Windows staying put on their workspace

Hi gang, I was wondering if it's possible to do the following things: 1) I'm finding that windows are popping up on my current workspace when they were generated by a window in a different workspace. These are very distracting. I'd like them to stay over there. 2) Right now, if I launch a big application (say, amarok or openoffice) on a workspace and change workspaces the window will pop up on the second workspace I am at now. Instead, I'd like to launch the application on it's own workspace, then go to a different workspace to do some work then come back after it's launched. Cheers! Jevin