Google checkout module and paypal

Hi guys I need your advice I have a client that has a paypal payment module and wants to add google checkout, I've got the module from google but looking at the installation procedure it looks daunting, Can anyone tell me if there is a script or easier way of installing it without copying the files over?

also will the paypal module still work with the google checkout one installed?

Its ok I've done it now basically just get the google code and change the folder templates to the name of your templates and using your ftp client drag and drop easy peasy, you do not need to copy the files listed in the installation file over one by one.

I have the standard paypal module when I installed zen cart. And I want google checkout too.
Can I use option A or do I need to use option B when installing google checkout to get both paypal and google checkout?

The Google Checkout button appears on the shopping cart page while your paypal checkout will be on the normal payment page. Thats the only way you can have it.

Sorry to be dim, but where and how do you install Google Checkout if you want to keep Paypal checkout as well?