Modify the text "Select the credentials you want to use to logon to this SharePoint site" on authentication provider selection page

Our SP 2010 site uses both Claims Based Auth and AD Auth. When we setup Claims based we used "SAML Provider" as the name so when users go to sign in, they get a sign in page with a choice between Windows Authentication and SAML Provider. Since 99% of our users have no clue what SAML Provider is, we need to modify the text "Select the credentials you want to use to logon to this SharePoint site:" to define what SAML Provider is. How can I modify the text in the sign in page? The only thing I've found is how to change the red X icon... All help is appreciated.