Thanks. I just took a bright light and looked all around the headtube, toptube and downtube. No visible cracks at all. The bike is used, but is in really good condition. A buddy who is a very experienced rider, and who races, found the bike for me and checked it out, too. He said it is in near perfect shape and only a year and a half old. The creaking isn't loud. At first, I thought it might be the cables up front moving against the frame. It's no louder than that. Might be nothing. I'll have the LBS check out the headset for grease. Just always scared to buy something used and have something go wrong with it....especially a bike this expensive.