I've got PayPal configured on an instance of nopCommerce hosted on my ISP (hosting.com). When confirming the order, which causes the call into PayPal, I get the following error returned:

Request for the permission of type 'System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

I assume this is because I'm calling out from my site to an external web service. How do I grant -- or ask my ISP to grant -- these permission to my web site so that I can make this web service call? I'll need to do the same for shipping methods, too. Thanks!