Insert statement question (multifield) #2

[Ted Greek]

How do I get two values for two different fields in an insert statement
values clause using one select?

For instance:

declare @test int
@test gets assigned...

insert into (id, field1, fname, lname)
values
(@id,
case @test
when 1 then 'a'
when 2 then 'b'
end,
select names.fname, names.lname from names where names.id = @id,
<??????????>
)

What I want to do is get both the first and last names for both insert
assignments using one select rather that either one select assigning to
variables or two selects in insert values clause.

Thanks.