WCF Json service AuthenticationScheme problem

Question

I'm trying to host a wcf json service on my localhost on my dev machine, but also want it available to other users on the network for testing purposes. My service works fine when running in cassini, however when running from a virtual folder, I'm getting the error

IS specified authentication schemes 'IntegratedWindowsAuthentication, Anonymous', but the binding only supports specification of exactly one authentication scheme. Valid authentication schemes are Digest, Negotiate, NTLM, Basic, or Anonymous. Change the IIS settings so that only a single authentication scheme is used

I don't want to remove Integrated Security because VS needs it to be able to debug, and I don't want to remove anonymous because the service runs under my id to access resources on the network. Is there a way of allowing more than one authentication scheme? what's the way around this ?

Cheers, Doga