Unfortunately there is no system in place to redirect your buyers to another checkout system while going through the Vendio checkout process.
We can only route users direct into PayPal or Verisign (for credit cards.)
We do hope however to eventually add other payment processing options, however they are not available at this time.
(you could however use the manual CC processing directions section to instruct your buyers to a specific phone # or web address for submitting payments. you can set this up via the MY Account page, under the global preferences option.)