how do i instal iOS 4.3 beta???

i bought the developer thing and downloaded iOS 4.3 for the ipad, i click the file and it automatically puts me into iTunes, then nothing. what do i need to do?? TIA

If you can find the 4.3 ipsw (looks like a little grey lego brick) then open itunes have your ipad connected, click on your ipad in itunes then hold down the "alt" key and click restore, this should bring up a window so you can select the ipsw file. Locate it click open and it should upgrade your ipad to 4.3

Let me know if you have any problems.
Hope this helps

- Simon