Select A Specific Row

I have a case where I need to randomly select two different serial numbers (a list of serial number are already in a table) and assign it to two variables. Or select a specific row from a list of results. Is there a direct way to do this?

e.g.
declare @var1 varchar(10), @var2 varchar(10)

select top 1 @var1=Serial from Table order by Serial
select top 1 @var2=Serial from Table where ServTag not in (@var1) order by Serial

select @var1, @var2

:confused: