Hello John,

This is Justin with Microsoft Office 365 SharePoint Support.

Using code with InfoPath Services in SharePoint Online will not be supported by Office 365 moderators and this type of implementation may not be possible if it is required it be published to the Central Admin site.  The article below will detail how to configure InfoPath Forums Services in SharePoint Online.  Let us know if you have further questions.

http://office.microsoft.com/en-us/sharepoint-online-enterprise-help/configure-infopath-forms-services-HA102476115.aspx

Thanks,

Justin Ronan
Microsoft Office 365 SharePoint Support