shipping module for magento

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Bids
2
Avg Bid (USD)
$238
Project Budget (USD)
$30 - $250

Project Description:
I need a magento expert to build a shipping method for my magento. my requirement as below:

i have 2 csv table: one is for zone table, and second one is rate table

zone table has 2 column: postcode and ZoneID, this table is to divide all australia into 10 zones by postcode. for example: vic, 3000

rate table has 4 colum: zone_id, base charge, rate per kilogram, and weight-break, for example:vic, 8, 0.5, 10
if customer from vic zone bought product weight under 10kg (weight_break), the freight is $8 (base charge), if the weight is over 10kg, say 20kg, the freight is (20-10)X0.5+8=13

i neeed this shipping module only works when order weight over 20kg and handle fee adjustable at admin.

the project need finished in 1-2 days once confirmation. and compatitable with lastest version of magento 1.3.2.3

Skills required:
Magento, PHP, Shopping Carts, SQL
Additional Files: zones.csv rate.csv
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