Skate,
There is obviously something missing from the statement - normally you would expect to see something like:-
Me!lstResults.RowSource = SQLstr & " ORDER BY ...."
or possiblly Me!lstResults.RowSource = Me!lstResults.RowSource & " ORDER BY..."
I think the last one would be a bit dicey though if you pressed the command button twice.
Check around the code and see if they are building an SQL string that the ORDER BY statement should be appended to.
I haven't seen the Files! bit before so I don't know about that. One of the other guys might be able to tell you if its valid - if not, and Proposal is a field on your form, try Me!Proposal.