How can I remove old SMB connections? Whenever I start up my old Mac Mini, I get an error indicating that it can't connect to an SMB share that I set up a long time ago:

So that this question is findable via Google, the text of this error message is:

Connection failed
The server &quot;PROSECCO.STUDY.LOCAL&quot; may not exist or is unavailable at this time.  Check the server name or IP address, check your network connection, and then try again.

I'd like to remove this connection, so that the Mac never tries to connect to the Samba share on the other (long-since expired) computer, but I can't find where to do this.  Can anyone tell me how to do this?  (The share doesn't appear in the Finder anywhere that I can find, and it's not shown anywhere under System Preferences ... -&gt; Networking -&gt; Advanced...)
(This Mac Mini runs Mac OS X 10.6.8, and is one of the models that isn't upgradeable to Lion.)
It depends on how this was set up to launch.  From boot, Go > Connect to Server > (click the dropbox) and select clear recent servers, if not using any.  Then go to System Preferences > Accounts and see if there is something set up in the Login Items tab related to the server and clear.  Restart and test.  If it continues I'd check Macintosh HD > Library > LaunchDaemons for a file related to mounting the server.