To get the timer back, just delete what you have on your signature now and then go through the process to build a new one using the thread near the top of the Tech Board.
The newer version of the timer looks better anyway, the word 'code' and the gray lines are not there now.
To get your picture back, recreate the lines either before or after your new signature. There is an excellent primer on adding clip art in the FAQ thread on the Tech Board also, if you don't remember how it was done before.
hope that helps