Query syntax

Hi,

I have two tables,

Table A has users' info, name, address.etc
Table B has notes that created by users in Table A, each user can create multiple notes.

Table A
userid
username
firstname
lastname
address

Table B
noteid
userid
note
date

I need to create an Excel report that contain all users and their notes. Since each user can create multiple notes, I want to combine individual user's notes into one cell.  Is there a way to do this in SQL stored procedure?  thanks