Where to start with a seized engine

[ps4330@okc01.rb.jccbi.gov (Peter Schauss x 2014)]

A friend of mine was just given a 1986 Alpha Romeo with
a seized engine.  He knows nothing at all about the 
condition of the engine.  My first reaction was to 
suggest that he pull the spark plugs and shoot some oil 
into the cylinders to see if he could make the engine turn over.
If that is a good idea, what kind of oil should he use and how
much?

Any other suggestions as to how he should procede before he
resorts to a complete rebuild?

Thanks,

Peter Schauss
ps4330@okc01.rb.jccbi.gov
pschauss@aol.com
1963 Austin-Healey 3000 Mk II
1980 MGB