Updating Multiple Salesforce.com campaigns from one form

Hi,

I have set up multi-select form for a webinar series. I want to be able to push the registrant data from a single form to a corresponding Salesforce.com campaign (9 sessions and each session has it's own SFDC campaign) Eloqua tells me this can't be done so I am hoping the community has a workaround.

Thanks in advance for your help!

Kristen