Log into your Google Checkout seller's account. From there do the following:
1. Click on the Settings tab.
2. Click the Integration link
3. Under Shopping cart post security make sure it is checked.
4. In the API callback URL enter https://www.blujay.com/gc
5. Under Callback contents: select Notification as XML(Requires an HTTPS URL)
6. Click the Save button at the bottom of the page.
Next we need to copy your Google merchant ID and Google merchant Key into blujay
1. Follow steps 1 & 2 above
2. Under Account Information, copy your Google merchant ID and key
3. Log into your blujay account, then click Update My Sales Policy
4. Check the Enable Google Checkout checkbox
5. In the Merchant ID field, enter your Google Merchant ID
6. In the Merchant Key field, enter your Google Merchant Key
7. Click the Submit update button at the bottom of the page.