Save yourself a little money. Buy an iPad 'camera connection kit' from Apple.
One of the adapters includes a USB port that is intended for copying images from a connected camera.

Gues what ? It also works for USB Microphones and USB Keyboards. You will get a pop-up telling you that the connected device is not supported - but that's just a troll under the bridge. Tap ok - and then use your regular size USB keyboard. Ive tried it with two different brands of USB keyboard .. a generic cheap 15.00 keyboard - and a more expensive Microsoft keyboard and they both work. Type to your hearts content using a keyboard you probably already have. I also use the 'Blue' 'Yeti' THX certified usb microphone for recording quality podcasts ON the iPad. I bought the clamcase for Christmas - just couldn't pass up that svelte sexy design. $99 Ships in January ( on my Delta Amex card ).

then there is there ... http://www.youtube.com/watch?v=EozwY...layer_embedded