You will need to uninstall and reinstall SilverLight and a new version of Firefox.
1. Go to Windows control panel
2. Uninstall Microsoft SilverLight
3. Go to the link: https://www.mozilla.org/en-US/firefox/organizations/all/
4. Click download
5. Select English (us), Choose Windows (not the 64 bit)
6. Install Firefox
7. Log into GIFTS ONLINE
8. Silverlight Message comes up again.
9. Install SilverLight from that window
Once SilverlLight has reinstalled you will be able to access Gifts Online.