Question : DBCC Shrink File job on tempdev will not stop

I just discovered this job is still running, and causing locks on the production databases.
I have tried to stop this job thorugh spotlight quest tools but cannot access the server in question.
I have tried countless times to open up enterprise manager for the server concerned but I am getting no response.

Is there a query i can use against tempdev to stop the dbcc shrinkfile job from running, I can open query analyser.
I don't want to reboot the server as it is a production database I could stop services that might do.
your advice please

Answer : DBCC Shrink File job on tempdev will not stop

run sp_who2 , find the process you wish to kill ( the one has been running for a long time) then you can kill that process by running a  "Kill  " passing the curresponding spid