I have a file that I have added 10 computer names i.e comp1. comp2 etc

What I am trying to do is when comp1 logs on the script checks the file and if it apears runs another script (not the problem) and then deletes the entry so it does not run again. The problem I forsee is if all 10 machines logon at the same time there will be a problem with file being locked by another machine.

Any ideas

chris.darling@virgin.net