[Exim] multiple aliases ?

hi all...

i finally got my exim going with virtual host....and let me tell ya that it
is no simple task ...speacially for a greenhorn like me :)...heheh!

although i am only now missing one piece of the puzzle...

how do i have one user have more than one alias ?

ie..

user "someone" has to email addresses alias1@??? and
alias2@???

thanks in advance

cheers

chris g