Dear Sir
We are a team of three professionals experts in magento. we develop the magento purchase, stock, logistic and product return management extension in which you do not need to made any core changes in the magento software just install and update it. we are also providing online support and customize services. our extension is gaining popularity in the web agencies of UK, USA, Germany and France.
If you are intrested then i will pass you more details.
thanking you and looking forward for your favorable response.