[Wlug] attaching processes

Hi, I was trying to find a way to attach a process to the shell's job list with no luck. I wanted to be able to bring a running process into the foreground of a shell session that didn't start the process. The closet command that i could find was the disown command for bash, which does the opposite of what I'm looking for. Does anyone know of a bash (or any other shell) command that will let you bring a processes into the foreground of a shell, which is not the original parent of the process? Thanks, --Brad