Alpha User Points & Virtuemart Integration

We want to use Alpha User Points to create a token/credit system for paying with items on Virtuemart. The process we need setup is as follows: 1. The user registers on the website, then confirms their registration. 1. User revisits website, navigates to 'Buy points' page. 2. The user is presented with buying £5, £10, £15, £25 credit options. The user can select how much credit they want. 3. The payment is taken using our payment Gateway (Worldpay) UK 4. The credits are added to the users account which they can use to purchase items from the virtuemart store. When the item is purchased from Virtuemart and checkout process is completed, the points are deducted from the users account. Credits remaining on the users account need to be shown in a Joomla Module.