CRE Loaded shipping modules

I need my cart page for creloaded at [login to view URL] modified to allow a variety of shipping prices, dependent on product weight. I have several suppliers, and shipping varies for suppliers. At the moment the shipping is hard coded and added to the total price, the shipping is currently set at £4.45 here is what I need. If a product has a weight of 0 then I wish to charge a flat rate of £5 if a product has a weight that is under 1.01kg then I wish to charge a royal mail rate of £2.80 (and show the customer the items are sent royal mail) if a product is over 1.01kg then I will ship by city link, with different prices dependent on weight. of course multiple products purchased will alter the weight. but you may get a mix of 0kg and >0kg orders. in that instance use the actual total weight to calculate price. on my shipping page I wish to replace the hard coded "Shipping: £4.45" to become "shipping (using city link) : £actual price" (change city link part to relevent shipping method) The total price must be reflected in the total:£ example output Sub-Total: £16.63 Shipping (Using City Link) : £4.45 Total: £21.0 I also require the ability to incorporate V.A.T into the total, but have it currently turned off. the shipping prices are as follows Citylink Next Day 0 – 5 Kg £4.45 5 – 20 Kg £5.45 20 – 30 Kg £8.00 >30kg £8.00 Royal Mail Up to 1.01Kg £2.80 I would like to see examples of previous work that relates to this project task. This is an urgent project, so please do not offer your services if you cannot complete in a reasonable time frame. Payment by escrow. Payment will be made once cart has been verified as working as required, I will not release payment until I am sure that the work is correct. This is my terms of business for this project. Thanks for your bids.