Just ask a Realtor. No need to enter any credit card info.
If you're talking about RealtyTrac, why would you even consider it? The information is old, outdated, inaccurate, and often misleading. Plus, you have to pay for the privilege.
I provide free foreclosure listings all the time to people in my area (D.C. metro area, especially Northern Virginia). I'm sure there are plenty in Hamtramck who'll do the same.
Hope that helps.