Paypal and Google Checkout will take some time to implement so I'm wanting to know if anyone in the community has installed them and has a recommendation on which to do first. We use the .Net environment.
Verdict - Start with Google Checkout. Great customer support, Great multi-language libraries, Simple, fast web interface.
Add Paypal Later - More established, but sketchy reputation, More steps in checkout process than Google, ** (Google - from merchant to Google)** ** (PayPal - from merchant to Paypal and Back to merchant - with express checkout) ** Varying-speed web administration tool that has many unorganized features buried.