Hi there Gloria,
I've been through this before myself with my Dell laptop.
I sent a request to Dell to get a quote on a new LCD panel, I nearly died when the quote came back at NZ$550.
LCD panels are not cheap, no matter what the brand.
However, having said that, I have to agree with noderaser's post just above, I kept an eye on TradeMe (local auction site) and eventually picked one up for NZ$195 plus free delivery.
Sure, I had to install it myself (which is not as easy as it sounds btw), but hey, it works as good as gold!
Best of luck, there's nothing like a broken LCD screen to ruin your day.