WP e-commerce, goldcart, sagepay and SKUs SKU not passed to basket

We need to pass the SKU through to the shopping basket and then on to sagepay so that the sage accounts package can pick them up.

Much to our surprise – it seems that wp-ecommerce and goldcart doesn’t offer this functionality natively. Im thinking that this must be a common issue and wonder if im missing something or someone can shed some light on how to achieve this.

Bit more detail. https://www.cheapcoallondon.co.uk – needs to use product codes and pass these though the basket to the accounts software used to run the coal yard. Currently when an order is passed – it lists the name of the product, the quantity, price etc. This works well, but isn’t picked up at the other end by the accounts software (SAGE instant accounts – soon to be line 50)which needs the SKU to make proper sense of the order. Currently it messes up the tax – cause there is no SKU against which to allocate VAT tax.

How can we pass the SKU to the basket – and if anyone knows – how can we make sage accounts pick it up (thogugh i undersatnd thats a little off topic and beyond the domain of WP e-commerce and goldcart).

Many thanks
G