Picking Up Data Meant For Many People

Hi,
I have a gridview on a page, which should select data from a database. I want it to select the data row if it finds its UserName in the UserName column, but there will be many usernames in the username column, seperated by commas.
Here is the select statement that I have at the moment, which doesnt return any data atall:
SELECT [message], [senddate], [subject], [messageid], [sendername], [recievername] FROM [Messages] WHERE ([recievername] LIKE '% ' + @recievername + ' %')
@recievername = Profile("UserName") which is the vwd wizards way of saying the current user. 
A Username column has data like this:
bezzer , bezlan , beezer , beezler
with a space between commas and a space at the start and the end.
Thanks if someone can help!
Jon