WCF service with WIF AD Single sign on

I have an Excel add-on which connects to a WCF endpoint located in our network to collect data. We're considering moving the application out to Windows Azure.

Currently the users are authenticated using their windows log on. I know that WIF, ACS and ADFS can allow us to authenticate on a web app but wondered if this would be possible with the WCF client.

Thanks

See here: Securing WCF Services with ACS

Also ACS and the code samples within.

If you are looking for delegation i.e. sign on using WIF and use that token for WCF, there's a delegation scenario and sample in the WIF SDK.