Charlton,
Apologies, I have just remembered i was supposed to respond to one of your older threads, so sorry about that.
Did you empty the tank and start again with regards to ammonia levels? If you did not then you may find that being an issue.
Are you testing for nitrites as well as ammonia levels to see if anything has changed at all?
Otherwise, if it is just one week I wouldn't worry too much. You may find that things happen fairly rapidly all of a sudden, and your ammonia levels have gone down by a huge % overnight.
It has been said that an airstone and higher temperatures can speed up the cycle. However, mine took jsut over 1 week before the ammonia started dropping.
You have to wait even longer for the nitrites to drop, often over twice as long as the ammonia levels dropping. It's a frustrating game of patience i'm afraid.. hang in there
EDIT: btw, mature gravel can help, but not a huge amount. and.. i love the freudian slip of saying "wishless cycle" instead of "fishless cycle"... made me laugh anyway...
Squid