Currently Being ModeratedSep 13, 2012 3:35 AM (in response to suellenfromlondon)
Where are the documents being "downloaded" to? When you tap and hold down on a document as a mail attachment - you should get the Open In option to pop up and then you can select Open In Pages - if that is where you want to open the document.
Are you using file sharing with iTunes to transfer your Pages files? Using iCloud?