You can use a code snippet to insert both the field declaration and the property get / set to encapsulate the field. The easiest way to do this is type 'prop' (without the quotes), and then hit the TAB key twice.
If you already have a field and just need to add the get / set, right click on the field and select Refactor -> encapsulate field.
Scott
http://www.OdeToCode.com/blogs/scott/