Google Chrome disappeared?

[Kathy]

This is what happened, you know rocketdock or whatever you call that- where icons are hanging? I accidentally drag Google Chrome out of that and it disappeared. I opened my files and saw Google Chrome. When i clicked it, it's just a file with nothing on it. HELP! Where is it?
And when I click start- all programs - then move the cursor to google chrome, It say "EMPTY"
Well I go online through Yahoo Messenger with the "Get a nex ID" thing but my computer hangs every hour. MAybe it's because of the "dealply" thing that suddenly appeared in my computer. so help