Why can't you use a timer?

>I have a small prg & form make into an exe that searches a SQL database for a string of any kind
>
>once it finds the data if any it opens it in a browse window
>
>
>SELECT des
>GOTO TOP
>BROWSE
>USE
>
>Problem is I have a user or 2 that leaves that browse window open and walks away.
>
>I would like to add a timer on the browse window for say 2 minutes then it shuts it down and closes the program
>
>any suggestions?