Magento Custom Option & New Order Email

I have created a store using magento 1.7.0.2 I have loaded all my products and have created one custom option for the products. What I need done is to make a server side script that will validate the custom option for numbers only. Also I need the custom option to show up in the new order email. The validation script can be server side if need be. Please only bid on this if you know how to work with Magento cause I do not need or want to waste your time nor mine, also please only bid if you can understand & write English real good. Please if you plan on bidding please be able to provide proof of similar work, if not do not bid. I would like to complete this project within 3-4 hours if possible Happy Bidding to all