Printing address on various size envelopes

In your Open Office I can not figure out how to find the setting or click on the item that would bring up different size envelopes to address. Please advise me how to do this step-by-step. Thanks You! Laddie

How to open attachment sent with Microsoft Office 2010

I received an email prepared with using Microsoft Office 2010 of which I don’t have I have Open Office, your program with the updates. How can I use your program to open an attachment sent to me that used Microsoft Office 2010? Frustrated!! Thanks, Mr. Laddie Dosedel