Cannot remove a broken sidebar network folder alias in Finder window
Mac OS 10.6.7 -- WinXP Home
I have a created netowork folder alias in the sidebar of my Finder window that points to a shared folder on an officemate's PC (WinXP Home). This folder has been deleted on the officemate's computer. Now, in my Finder window, I cannot click on the alias. Clicking on the broken network sidebar folder aliases or dragging them off of the side bar (they used to vanish in a puff of smoke but now they don't) does nothing.
I can right/control-click is but the only option in the sub-menu is "Open Sidebar Preferences..." and nothing else (other aliases have all the options including "Remove from sidebar"). I can't even drag the folder aliases off of the sidebar in a puff of smoke either. I'm at a loss on this one.
Any ideas how to remove these broken sidebar aliases? Even opening the sidebar preference panel yielded nothing I could see that would help.
iMac, Mac OS X (10.6.7)