something along the lines of...
Declare @assignTo nvarchar(4000)
select @assignTo = Coalesce(@assignTo + ', ', '') + CAST(Name as nvarchar(250))
but fair warning that won't work in a subquery..to use it in a correlated subquery you'll have to write it into a UDF with table access.
Umm....as far as I know. It's been a while.