I'm looking for guidance on Indexing in Access 2003.

Background: I'm working with an Access database shared over a network,
about 20 users and it has been split into FE / BE. I'm trying to milk all
the speed out of it that I can.

I view the Index table for my primary table and it looks full of indexed
fields. (I did this after trying to add an index to a field and getting a
message that Access can't add index because there is too many).

1. What is the limit on number of indexes allowed on a table in Access 2003?

2. Is it possible to add an index within the view index table although not
be able to add an index from design view of the table itself?

3. Any tips on prioritizing which should be indexed?

4. Tips on when to use a composite (combination) index or when not to?

thank you