Link iPad with LCD projector ?

Any one here aware of how to link iPad to LCD project , where can I buy the interface cable ?

It depends on the unit you want. Some come with a cable, others work with the Apple cable.

Can recommend me which one I should consider ?

One of the newer Casio because their bulbs last a hundred times longer, some of their models can be accessed by wifi and that you can use them with a simple USB key. Plus they're as small as a three ring binder. The one on my wish list is the Xj-A245U

This is the cable I use Apple iPad Dock Connector to VGA Adapter - Apple Store (U.S.)

Not every program will work with it, so you want to make sure the program will work with the cable before you rely on it. I have used it with netflix and keynote.

Hey that Casio projector looks sweet, I didn't even know Casio makes projectors, actually I thought Casio went out of biz, lol

You can also use any iPod cable that supports video.
The picture may look bad really big as the iPad output resolution is really not great huge.

Thank you very much for all your feedback.

I use the Apple video adapter with my iPad and an LCD projector for astronomy presentations. The iPad's output is only 1024x768, but so is the projector I'm using so it's fine. Only a few programs actually support doing this though, so you'll need to check. It does work with Keynote, but I don't think even the photo viewer supports it (haven't actually checked). The adapter is only $30 at the Apple store.

any one know why ipad when connect to projector why have so much problem ?