To create or modify links for Sponsorship logos you will need to do the following from within Sphere:

1. Go to Communities > Special Events > Friends Asking Friends > Kintera Thon
2. Hover over your event name
3. Click Website Info
4. Click Sponsor Information
5. Click Sponsorship logos
6. Click on the "Click here to select a sponsor" link
7. Mark the radio button next to the sponsor you want to link
8. Click the Select button
9. Fill in the Sponsor Website Address field
10. Click Submit

Go back to the Webinfo Checklist and make sure you click Publish Your Event Now for the change to take effect.