Thanks to Bill Huber for replying to my question. Here is the
original question:
How can I replicate the Map Query in Avenue.  That is I
want to be able to query multiple grids at the same time.

Basically, there are two answers
1) Do it in the Map Calculator.
2) Use the 'con' command.
I don't want to have to use the Map Calculator  so
I was hoping for a more elegant solution than a
complex 'con' statement.  I never found one and
Bill Huber indicated that 'con' was the only way.
Here is an example of the 'con' statement that I
used.  It searches two grids, each grid is searched
for a specific range.  I eventually needed to be able
to search up to five grids - I did it with a con but it
is a nasty statement!!  I may have too many parenthesis
but as least I was able to understand the statement then.
If you have questions or suggestions to make it better please
let me know.  Thanks again Bill, pat
testgrid = ((thegrid > 0.AsGrid).Con(((thegrid <
20.AsGrid).Con(((covgrid > 0.AsGrid).Con(((covgrid <
40.AsGrid).Con(1.AsGrid,0.AsGrid)),0.AsGrid)),0.AsGrid)), 0.AsGrid))