Help with fixing problems in Magento

Closed - This job posting has been filled and work has been completed.

Job Description

I am looking for somebody who meets ALL the following criteria. Please DO NOT APPLY if you don't meet all of these:

* able to communicate with me real-time Hong Kong time (9am-6pm every day = Monday-Friday)
* you need to be available at all times to answer questions
* available to work full time for at least the next couple of weeks
* Knows Magento very well (from a programming perspective) and is able to change functionality (i.e. not just design)

Can tell me why I get the following message when I navigate to the categories management screen in the back end:

Item (Mage_Eav_Model_Entity_Attribute_Option) with the same id "153" already exist

I am looking for someone to start IMMEDIATELY

Skills: design, management