so you need to use a left join to that table, with that table being on the RHS of the join
the LEFT JOJN means return all rows from the LHS of the join (the mytable in the example above) AND all rows that have a match in WO_Eliminate. if thgere is no match in WO_Eliminate then return NULL in place. SO by adding 'WHERE isnull(WO_Eliminate.othercolumn)' you then eliminate any rows in the resultset where there is a NULL value in WHERE isnull(WO_Eliminate.othercolumn). meaning you only get rows whose workorder number is not in WO_Eliminate.
select my, column, list from mytable
LEFT JOIN WO_Eliminate on mytable.acolumn = WO_Eliminate.othercolumn
essentially you can do the same task by having numbers you want included by entering then into a tabel and the rejecting rows which are not NULL
If you don't use SQL directly then you can get the same effect by opening your query in the query designer and then select the JOIN (the link between the two tables) and define the link as required. I forget the weasel words Access uses but you should be able to suss it out. Then add a column from WO_Eliminate table and in the criteria set it to isnull. I rarely use the query designer myself, preferring to use SQL directly (yes I am one of the cro magnon developers who hates GUI interfaces which tend to look real purdy and come between you and what you want to achieve )
WHERE NOT isnull(WO_Eliminate.othercolumn)
I'd rather be riding on the Tiger 800 or the Norton