The + sign is what you use to concatinate strings in SQL.
col1 + col2 as Colname
If one of the columns happens to be numeric (i.e. int) then use convert or cast
col1 + convert(varchar(10), col2) as Colname
If one of the columns allows null, you'll need to use IsNull otherwise, the entire string will return null:
col1 + isnull(col2, '') as Colname
To create a view:
CREATE VIEW dbo.MyView
AS
SELECT col1, col2, col3 + col4 + col5 as NewColName
FROM dbo.MyTable
GO
You can also create a computed column and place your concatination there. Computed columns can also use functions for things like running totals and such and do not require the extra view.