Hi there,
I use a new plugin that is only for mt gox, (mtgox)
It works very well, accepts the payments directly into my MT Gox account, and releases the digital software when MT Gox approves the funds in moments. It also has an incentive % offset, I offer bitcoin payers 20% off. The plugin calculates the new price, and charges them that only.
Here is the link to the MTGox Woocommerce plugin:
MTGox Woocommerce plugin
https://www.craigslistsoftware.me/payments/product/mt-gox-woocommerce?