Automatically move data to another sheet

Hi Everyone,
I've learned so much from everyone about vba, hopefully I'll be able to start contributing back soon! Here is my latest question... I am trying to automatically have data transferred from sheet1 to sheet2 after it is entered without having to press a button to trigger it.

The part I need help with is the automatic triggering. I can write the program to actually move the data how I need it, I just don't want to have to do anything special to make the transfer occur. Any suggestions?

Thanks, I knew it had been discussed before, I just couldn't find anything. I tried about 5 different search strings with either 100's of results, or 5 irrelevant results.

Jeff