Hi lindahmd,
Once you have submitted a listing to eBay with Paypal offered as an accepted payment method, you should be able to remove that payment option be logging into your eBay account and clicking the "Revise your Item" link. Then, on the ensuing page, scroll down to the section labeled "Payment methods you accept", uncheck the box next to "Paypal", and save your changes.
I hope this information proves useful. If you have any additional questions or concerns, please file a support request using the appropriate link on our help page:
http://www.auctiva.com/free-auction-software-help/help.aspx-Mike